Solecooler

What Solecooler does

Solecooler is a French privately-held startup (SAS), founded in 2019 by engineer Bruno Aubert and headquartered in Perpignan, that develops thermoregulating insoles under two product lines. ClimFeet (in two variants, Perf and +) consists of reversible insoles built from hundreds of miniature patented air-cell heat pumps activated by mechanical foot pressure; one side warms feet by approximately +4°C and the other cools by approximately -3.5°C, with no battery, electricity, or chemicals required. WarnFeet, unveiled at VivaTech 2026, is a battery-free connected insole equipped with 150 sensors intended to detect early warning signs of diabetic foot ulcers and pressure/temperature anomalies, positioned at roughly 15x lower cost than competing diabetic monitoring devices. The company monetizes primarily through direct-to-consumer e-commerce at www.solecooler.com (ClimFeet Perf at €59.90, ClimFeet+ at €79.00) with worldwide shipping, complemented by a professional/bulk channel (up to 100 pairs via the website, dedicated pricing sheets for larger volumes) and a recycling program offering 10% off the next purchase in exchange for returned insoles. Solecooler targets three primary segments: outdoor sports and trail athletes, cold/heat-exposed workers (construction, refrigeration, high-altitude), and medical users including diabetic patients and individuals with circulatory disorders such as Raynaud's syndrome, and is seeking a $5 million funding round to support industrial scale-up and international expansion into medical and Asian/US markets.

Name

Solecooler

Legal name

Solecooler Inc

Website

https://solecooler.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Solecooler is a French SAS founded in 2019 that designs and sells battery-free, reversible thermodynamic insoles (ClimFeet) and a battery-free connected diabetic-foot-monitoring insole (WarnFeet), distributed worldwide via direct-to-consumer e-commerce and professional bulk channels.

Ownership category

akta.pro rank

Product category

Thermoregulating Footwear Insoles

NAICS

Footwear Manufacturing (31621), Electromedical and Electrotherapeutic Apparatus Manufacturing (334510)

SIC

Footwear, (No Rubber) (3140), Electromedical & Electrotherapeutic Apparatus (3845), Orthopedic, Prosthetic & Surgical Appliances & Supplies (3842)

akta.pro industry

PRIMARYCRAAACAK

Footwear Components & Materials (Uppers, Soles, Laces, Insoles)

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

SECONDARYHLAHACAK

Continuous Temperature & Fever Monitoring (Wearable Thermometry)

Healthcare & Life Sciences/Medical Devices & Diagnostics/Patient Monitoring, Wearables & Remote Diagnostics

Keywords

• Thermodynamic insoles
• Heated cooling insoles
• Battery-free footwear
• Diabetic foot monitoring
• Thermoregulating insoles

Headquarters

HQ city

Perpignan

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Product Sales: Direct sales of ClimFeet and WarnFeet insoles to consumers and professionals through e-commerce website. One-time hardware purchase model with 1-year warranty.
2. Bulk/Professional Orders: Professional and bulk ordering capability directly through the website for up to 100 pairs. Dedicated professional pricing sheets available for business customers.
3. Recycling Program Revenue: Insole recycling program offering 10% discount on next purchase in exchange for returning worn insoles. Supports circular economy initiative.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Solecooler designs, manufactures, and sells battery-free thermodynamic insoles (ClimFeet Perf at €59.90/pair and ClimFeet+ at €79.00/pair) that warm or cool feet via patented miniature heat-pump cells activated by footstep pressure, with no batteries, electricity, or chemicals. The company is also developing WarnFeet, a battery-free connected insole with 150 sensors aimed at early detection of diabetic foot ulcers, unveiled at VivaTech 2026.

Product overview

Solecooler is a French startup (SAS) based in Perpignan, France, specializing in advanced thermoregulating and connected insoles. The product portfolio consists of two main insole lines: the ClimFeet line (ClimFeet+ and ClimFeet PERF) and the WarnFeet line. ClimFeet products are reversible thermodynamic insoles that warm or cool feet without batteries or chemicals, using patented miniature heat-pump technology activated by the energy of footsteps. The WarnFeet is a battery-free connected insole with 150 sensors designed to monitor plantar pressure and temperature for early detection of diabetic foot ulcers. The company sells directly to consumers (B2C) via its e-commerce site and to professionals (B2B) through bulk ordering.

Differentiator

Problem solved

Functional benefit

Brands

• ClimFeet: Reversible battery-free thermodynamic insoles that warm or cool feet using mechanical energy from footsteps. Available in ClimFeet Perf (5% copper, for active lifestyles) and ClimFeet+ (10% copper, for sensitive feet/circulatory issues) variants.
• WarnFeet

Products and services

• ClimFeet+ Reversible thermodynamic insole (90% TPU, 10% copper) that warms (+4°C) or cools (-3.5°C) feet using patented miniature heat-pump cells activated by footstep pressure. Designed for people with sensitive feet or circulatory problems including Raynaud's syndrome. One size cut-to-fit, US 4–13 / EU up to 48.5. Priced at €79.00 per pair (incl. VAT).
• ClimFeet Perf Entry-level reversible thermodynamic insole (95% TPU, 5% copper) for active lifestyles and regular sport practice. Warms or cools feet using footstep-activated heat-pump technology. Priced at €59.90 per pair (incl. VAT).
• WarnFeet Battery-free, recyclable connected insole equipped with 150 sensors that continuously monitor plantar pressure and temperature to detect early warning signs of foot ulcers in people living with diabetes. Positioned at approximately 15x lower cost than competing diabetic foot-monitoring devices.

Quantifiable outcome

• Warm side provides +4°C increase, cool side provides -3.5°C reduction in foot temperature
• +4 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature4 records

Partnerships

One partnership is on record.

• EU Business HubcoreStrategic or Co-development Partner · 1 March 2026EU Business Hub is a European program supporting companies in health, digital, and green sectors in expanding into new markets. Solecooler was selected among 50 companies across Europe and one of only 4 from France to participate in KIMES 2026 within the European Pavilion.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• ThermaCell: ThermaCell manufactures battery-powered heated insoles primarily for outdoor enthusiasts and workers in cold conditions. Direct competitor to Solecooler's ClimFeet line in the thermal regulation insole category, targeting similar use cases (hunting, outdoor work, cold weather activities) but using a fundamentally different battery-based heating architecture.
• Currex: Currex (formerly known as CurrexSole) is a German manufacturer of sport-specific dynamic insoles with proprietary profiles for running, hiking, soccer, and other activities. Direct competitor in the premium sport insole category with overlapping target customers (serious athletes, outdoor enthusiasts), though lacking thermal regulation features.
• FeetMe: FeetMe is a French startup developing connected insoles with embedded pressure sensors for gait analysis, rehabilitation, and clinical applications. Direct comparable as a smart insole competitor targeting both consumer sports and medical/clinical use cases, with overlapping technology approach (sensors in insoles) though focused on pressure rather than temperature monitoring.
• Siren: Siren makes smart socks with embedded sensors for continuous diabetic foot temperature monitoring to detect early signs of ulcers. Direct comparable to Solecooler's WarnFeet product line in the connected diabetic foot monitoring category, with overlapping target customers (diabetic patients at risk of foot complications) and similar value proposition of early detection.
• PowerStep: PowerStep manufactures orthotic insoles for foot pain relief, arch support, and medical/comfort applications. Comparable in the medical/comfort insole category, particularly for customers with foot conditions like plantar fasciitis, though lacking Solecooler's thermal regulation technology.
• Hotronic: Hotronic specializes in battery-powered heated insoles for ski boots and outdoor footwear, with strong presence in the winter sports market. Direct competitor to ClimFeet's warming function, serving overlapping customer segments (skiers, winter sports enthusiasts, cold-weather workers) but with a different power-source architecture.
• Lenz Products: Lenz Products is a German manufacturer of heated socks, insoles, and gloves for outdoor sports (skiing, hiking, motorcycling). Direct competitor to ClimFeet in the heated insole category with an established European brand presence, but uses rechargeable battery technology rather than Solecooler's passive thermodynamic approach.
• Orpyx Medical Technologies: Orpyx develops smart insole technology (SurroSense Rx) for diabetic foot ulcer prevention through continuous pressure and temperature monitoring. Direct competitor to WarnFeet in the diabetic foot monitoring category with regulatory-cleared medical device positioning, though Solecooler's battery-free architecture offers a 15x cost advantage claim.

Broad incumbents

• Dr. Scholl's: Dr. Scholl's is a mass-market insoles and foot care brand with extensive retail distribution (drugstores, supermarkets, shoe retailers). Broad incumbent in the consumer insole category with mass-market positioning and lower price points; competes indirectly with Solecooler in addressing foot discomfort but lacks thermal regulation differentiation.
• Superfeet: Superfeet is a well-established US-based premium insole brand offering shape-based orthotic insoles for athletic, casual, and work footwear. Broad incumbent in the consumer premium insole market with extensive retail distribution and brand recognition, but focused on biomechanical support rather than thermal regulation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/solecoolerofficial
• LinkedInlinkedin.com/company/solecooler
• Instagraminstagram.com/solecooler

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 Solecooler