Osso

What Osso does

OS2O FAST&LIGHT is a Spanish direct-to-consumer technical outdoor apparel brand founded in 2008 and headquartered in Jaca, in the Pyrenees region of Spain, with company-owned retail stores in Jaca, Madrid, and Barcelona (Osso). The company designs and sells ultralight, high-performance clothing for trail running, ski mountaineering (skimo), alpinism, and general mountain activities, operating under the principles "FAST&LIGHT" (minimum weight, maximum function), "High Value" (constant pricing without intermediaries), and "Protect Your Playground" (sustainability). Its proprietary technology stack centers on the in-house O2 Membrane 3L (20k/40k waterproof/breathability) and StretchShell PRO 3-layer (15k/30k) membranes, complemented by licensed components from eVent (DVStorm 3L), Toray (10D/20D fabrics), DownTek (hydro-repellent 850FP down), DuPont Sorona (bio-synthetic insulation), and YKK (AquaGuard zippers), with third-party certification via RDS (down), PFC-Free DWR, and Oeko-Tex Standard 100. The product range covers waterproof hardshells, down and synthetic insulated jackets, soft shells, windbreakers, sun-protection layers, thermal mid-layers, competition skimo suits, and technical pants and accessories, with flagship items such as the Summit Skimo Suit (380g, co-developed with the Spanish National Skimo Team) and Lithium O2 40k Jacket (312g) demonstrating the engineering focus on weight-to-performance ratios.

OS2O makes money through two channels: (1) online direct-to-consumer sales via os2o.com with Spanish and English storefronts shipping across European markets, and (2) company-owned physical retail in three Spanish cities. Products are sold at constant year-round prices ranging from €49.90 entry technical items to €279.90 premium hardshells, with no retail intermediaries or third-party wholesale. Primary customer segments are trail running athletes, skimo competitors, and alpinism/mountaineering enthusiasts, plus a secondary general outdoor/recreation segment. Target buyers are individual consumers rather than enterprise accounts. Marketing is content- and community-driven, leveraging the OS2O blog, Instagram, Facebook, YouTube, TikTok, and an email newsletter, supplemented by athlete partnerships (notably the Spanish National Skimo Team) that provide product validation and credibility in mountain sports communities.

Operationally, OS2O is a private company with 11–50 employees; no funding rounds, ownership structure, or revenue are disclosed in the source material. Customer service operates limited weekday hours and is reachable via Spanish phone (+34 974 26 50 95) and email, consistent with a small specialist team. The company has no mobile app, no public API or developer platform, and no disclosed institutional investors, with the founder Rafael Peinado referenced as a co-founder. Geographic focus is Spain and broader Europe via the DTC website, with no global footprint claim or wholesale distribution strategy documented.

Name

Osso

Legal name

OS2O FAST&LIGHT

Website

https://os2o.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

1–10 employees

Short description

OS2O FAST&LIGHT is a Spanish direct-to-consumer brand designing and selling ultralight, high-performance outdoor apparel—waterproof shells, down and synthetic insulation, soft shells, and competition skimo gear—via os2o.com and three company-owned stores in Spain, serving trail runners, skimo competitors, and alpinists.

Ownership category

akta.pro rank

Product category

Outdoor Technical Apparel

NAICS

Apparel Accessories and Other Apparel Manufacturing (3159)

SIC

Women's, Misses', And Juniors Outerwear (2330)

akta.pro industry

PRIMARYCRAAAEAB

Performance Outerwear & Technical Apparel

Consumer Products & Retail/Apparel, Footwear & Accessories/Athleisure & Performance Wear

SECONDARYCRAAAAAI

Outerwear & Cold-Weather Apparel Manufacturers

Consumer Products & Retail/Apparel, Footwear & Accessories/Apparel Brands & Manufacturing

SECONDARYCRAMAMAK

Outdoor Clothing & Footwear Retail (Camping/Hiking/Climbing)

Consumer Products & Retail/Sporting Goods & Outdoor Retail/Camping, Hiking & Climbing Retail

Keywords

• Technical outdoor apparel
• Ultralight waterproof jackets
• Ski mountaineering clothing
• Trail running apparel
• Alpinism gear

Headquarters

HQ city

Jaca

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Direct E-commerce Sales: Direct-to-consumer online sales through os2o.com. Products shipped directly to customers with no intermediaries, enabling competitive pricing and direct customer relationships.
2. Physical Retail Store Sales: Sales through company-owned retail stores in Madrid, Barcelona, and Jaca, Spain. Stores provide in-person customer experience and product fitting services.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

OS2O FAST&LIGHT designs, manufactures (via partner factories), and sells ultralight technical mountain apparel direct-to-consumer through its own online store and three Spanish retail locations. The product range spans waterproof hardshell jackets, soft-shell jackets and pants, 750–850 fill power down jackets, synthetic insulated pieces, windbreakers, sun-protection layers, ski mountaineering and alpinism pants/suits, and accessories such as tubular gaiters and shorts, all engineered to a FAST&LIGHT philosophy of maximum functionality at minimum weight for trail running, skimo, and alpinism.

Product overview

OS2O FAST&LIGHT is a Spanish direct-to-consumer technical mountain apparel brand operating under three principles: FAST&LIGHT (ultra-lightweight performance), HIGH VALUE (quality at constant prices direct to customer), and PROTECT YOUR PLAYGROUND (sustainability). The product portfolio centers on high-performance outdoor clothing for alpinism, ski mountaineering (skimo), trail running, and general outdoor activities. Key product lines include waterproof hardshell jackets (O2, Lithium, Cyclone, W-Series) utilizing proprietary O2 Membrane and eVent DVStorm technologies; down jackets (Nebulae 850FP, Turbulence 850, Quantum 750) with certified RDS fill; soft shell jackets and pants (EVO StretchShell PRO, Evolution StretchShell) featuring StretchShell PRO membrane technology; windbreakers (Minimus Pro); thermal layers (Hoka Jacket Pro, Inferno Sorona insulated); and sun-protection layers (Skin Feel Sun Hoodie/Jacket). Technical pants include the W-Series Alpine Suit and Summit Skimo Suit for competition use, plus W-Series Waterproof Shell Pants. Accessories include soft flasks, socks, gloves, and tubular neck gaiters. All products emphasize minimal weight with maximum functionality, with most technical jackets weighing under 400g.

Differentiator

Problem solved

Functional benefit

Products and services

• O2 Waterproof Trail PRO Jacket 30k Ultralight waterproof trail running jacket using the proprietary O2 30K membrane with 20,000mm waterproofing and 30,000g/m²/24h breathability, fully taped seams, and weighing 148g (men) / 127g (women); packable into its own pocket for trail runners and mountain athletes.
• O2 Waterproof Trail Speed Zip Jacket 30k Competition-focused waterproof trail jacket with rear zipper baffle for pack/chest rig compatibility, O2 30K 2.5-layer membrane, YKK Coil AquaGuard zippers, weighing 167g (men) / 138g (women); designed for racing trail runners who need back access without removing the jacket.
• Minimus Pro WindBreaker Jacket Ultralight windbreaker for trail running and skimo at 78g (men) / 72g (women), built from WindBreaker rip-stop fabric with laser-cut back perforations and packable into its own pocket; targeted at minimalist mountain athletes.
• Skin Feel Sun Hoodie Lightweight sun-protection hoodie with UPF 50+ integrated protection, Skin Feel quick-dry wicking fabric, laser-cut back ventilation, and anti-odor treatment at 134g (size S); for warm-weather mountain activities.
• Skin Feel Sun Jacket Ultra-lightweight warm-weather technical jacket with UPF 50+, Odor Shield antibacterial treatment, full YKK front zipper, weighing 190g (men) / 161g (women); for trail running and mountain activities in sun-exposed conditions.
• Hoka Jacket Pro Thermal jacket for cold-weather trail running and outdoor activities built with KYNETIC elastic fabric, ActiveFit pattern, packable hood, and reflective details; weighs 367g (men) / 322g (women).
• Nebulae 850FP Hydro Repellent Jacket Ultralight down jacket with 850CUIN DownTek hydro-repellent goose down, Toray 10D micro ripstop fabric, 100g fill, 5cm baffles, weighing 250g; designed for dynamic FAST&LIGHT activities with RDS-certified down.
• Turbulence 850 Down Jacket High-performance belay jacket with 850CUIN RDS-certified duck down, 20D nylon double-layer construction, 160g fill, helmet-compatible hood, weighing 523g (men) / 479g (women); for alpine use and cold-condition belay stops.
• Quantum 750 Jacket Versatile down jacket with 750CUIN RDS-certified goose down, 20D ripstop nylon, 122g fill, Outdoor Fit, weighing approximately 441g; suitable for both mountain and everyday wear.
• EVO StretchShell PRO Jacket Versatile soft-shell jacket for trail, skimo and alpinism with StretchShell PRO 3-layer membrane delivering 15,000mm waterproofness, 30,000g/m²/24h breathability, 4-way stretch, PFC-Free DWR; weighs 277g (men) / 236g (women).
• EVO Alpine Jacket Technical soft-shell jacket for alpinism and skimo with harness-compatible cut, StretchShell PRO 3-layer membrane, and torso stability features for vertical maneuvers; weighs 410g.
• Lithium O2 40k Jacket Premium 3-layer hardshell for alpinism and ski mountaineering with the O2 Membrane delivering 20,000mm waterproofness and 40,000g/m²/24h breathability, 20D fabric, helmet-compatible hood; weighs 312g (men) / 277g (women).
• Cyclone eVent Waterproof Jacket Technical 3-layer hardshell for demanding alpinism and skimo with eVent DVStorm membrane (20,000mm waterproofness, 30,000g/m²/24h breathability), helmet-compatible hood; weighs 393g (men) / 334g (women).
• W-Series Waterproof Shell Jacket Lightweight 3-layer hardshell for FAST&LIGHT alpinism with eVent DVStorm membrane (20,000mm waterproofness, 30,000g/m²/24h breathability), asymmetric 3/4 zipper, helmet-compatible hood; weighs 320g.
• W-Series Alpine Suit High-altitude alpinism pants/overalls with Sorona bio-synthetic insulation in the lower body, Polar Stretch Grid top, Kevlar reinforcement at knees and hem, PFC-free wind/water resistance; weighs 642g.
• Summit Skimo Suit Competition ski mountaineering suit built from Neoskin 4-way stretch fabric with strategic pockets for skins and gear, Dyneema ankle reinforcement, co-developed with the Spanish National Skimo Team; weighs 380g (size XS).
• W-Series Waterproof Shell Pants 3-layer waterproof breathable pants for alpinism with eVent DVStorm membrane (20,000mm waterproofness, 30,000g/m²/24h breathability), side zippers, Kevlar hem; weighs 317g.
• EVO StretchShell PRO Pants Versatile soft-shell pants for skimo and fast alpinism with StretchShell PRO membrane, high breathability, and full 4-way stretch; optimized for combined use with EVO jackets.
• Evolution StretchShell Pants Lightest technical pants in the EVO line built with StretchShell PRO 3-layer (15,000mm waterproofness, 30,000g/m²/24h breathability), weighing 228g; designed for fast skimo and winter trail use.
• Inferno Sorona 200 Insulated Jacket Synthetic insulated jacket with Sorona bio-synthetic fill for winter activities and belaying that maintains warmth when wet, with ergonomic cut and helmet-compatible hood; weighs 532g (men) / 525g (women).
• FAST&LIGHT GRID Shorts Woman Ultralight women's trail running shorts with grid fabric ventilation designed for maximum freedom of movement during mountain running.
• Tubular Glacier Technical tubular neck gaiter for mountain activities, part of the accessories line.
• Minimus WindBreaker Vest Ultralight windbreaker vest for trail running built from WindBreaker rip-stop fabric with laser-cut back perforations and packability into its own pocket; weighs 61g.

Quantifiable outcome

• EVO StretchShell PRO Jacket achieves 15,000mm waterproof and 30,000g/m²/24h breathability at 277g
• +2 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Seven partnerships are on record, tiered core, supporting and flagship.

• eVent FabricscoreTechnology or IntegrationLicensed use of eVent DVStorm 3-layer membrane technology in premium waterproof products including Cyclone Jacket, W-Series Waterproof Shell Jacket, and W-Series Waterproof Shell Pants. Membrane provides 20,000mm waterproof rating and 30,000g/m²/24h breathability.
• Toray IndustriescoreTechnology or IntegrationSupplier of high-quality 10D and 20D fabrics for down-proof applications. Used in Nebulæ 850FP jacket (Toray 10D micro ripstop) and other down insulation products.
• DownTekcoreTechnology or IntegrationLicensed hydro-repellent down technology (DownTek) for use in Nebulæ 850FP Hydro Repellent Jacket. Treatment allows down to maintain loft and insulation properties even when wet.
• YKK CorporationcoreTechnology or IntegrationSupplier of premium zippers including YKK AquaGuard waterproof zippers, YKK Vislon AquaGuard, and YKK Nylon Coil Coil zippers used across product range for reliable performance.
• Responsible Down Standard (RDS)supportingOthersThird-party certification ensuring down and feathers come from ducks and geese that have been treated responsibly. Applied to Turbulence 850 and other down products.
• DuPont SoronacoreTechnology or IntegrationSupplier of Sorona bio-synthetic fill material used in Inferno Insulated Jacket and W-Series Alpine Suit. Provides thermal insulation that maintains properties when wet.
• Spanish National Skimo TeamflagshipStrategic or Co-development PartnerCollaborative product development partnership for ski mountaineering competition apparel. Summit Skimo Suit developed alongside national team athletes to optimize for competitive skimo requirements.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Salomon: French leader in trail running and ski mountaineering apparel and footwear. Overlaps with OS2O across skimo competition apparel and fast-and-light trail running jackets, and shares the European mountain-sports customer base.
• Norrøna: Norwegian premium outdoor brand producing technical shells, insulation, and mountain apparel. Closely comparable in product mix (ultralight hardshells, down jackets), direct-to-consumer emphasis, and Scandinavian/European customer profile.
• Rab: British mountaineering apparel brand focused on alpinism, ice climbing, and expedition gear. Comparable in technical outerwear category, RDS-certified down products, and premium positioning for mountain athletes.
• Arc'teryx: Canadian premium technical outerwear brand specializing in ultralight, high-performance hardshells, softshells, and insulation for alpinism, skimo, and trail running. Closely comparable in target customer, product category, and weight-to-performance positioning.
• Mountain Equipment: British technical mountaineering brand with strong alpinism heritage. Comparable in hardshell and insulation product categories, RDS-certified down usage, and alpine-athlete customer base.
• Black Diamond Equipment: US-based specialist in climbing, skimo, and mountain apparel. Comparable in skimo and alpinism focus, ultralight product positioning, and athlete-team-driven product development.

Broad incumbents

• Patagonia: Larger California-based outdoor apparel leader with deep sustainability positioning (RDS, PFC-free, recycled materials) overlapping with OS2O's certifications. Competes more broadly across outdoor categories rather than specializing in ultralight.
• The North Face: Global incumbent in technical outdoor apparel with substantial presence in trail running and mountaineering. Overlaps with OS2O on hardshells and insulation but operates at much greater scale and broader category breadth.

Emerging players

• Houdini Sportswear: Swedish sustainability-led outdoor apparel brand with overlapping PFC-free, recycled, and circular-product credentials. Comparable in DTC model, European customer base, and minimalist technical outerwear positioning.
• La Sportiva: Italian mountain brand primarily known for footwear but expanding into technical apparel for skimo, trail running, and alpinism. Comparable in European mountain-athlete customer base and FAST&LIGHT performance positioning.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@os2o.fastandlight
• Facebookfacebook.com/OS2O.Fastandlight
• Instagraminstagram.com/os2o.fastandlight
• TikToktiktok.com/@os2o.fastandlight?lang=es
• Xx.com/os2o_

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Osso