Sizebay
Sizebay is a vertical SaaS platform that provides AI-driven size recommendation, virtual try-on, and product discovery tools to fashion e-commerce retailers across more than 60 countries, helping brands reduce returns and lift conversion.
- Company typePrivate
- Founded2014
- HeadquartersAustin, United States
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What Sizebay does
Sizebay is a vertical SaaS company that sells AI-driven size recommendation, virtual try-on, and product discovery software to fashion e-commerce retailers. Founded in 2014 and operating from Coimbra, Portugal with a regional headquarters in Joinville, Brazil and data centers in Dublin and Ashburn, the company serves brands across more than 60 countries in English, Spanish, Italian, and Portuguese. Its platform combines anthropometric intelligence, computer vision, and generative AI to map shopper body data and photos onto size predictions and garment visualizations, addressing the industry's structural problem of high return rates and fit-driven cart abandonment.
The product portfolio centers on the Size & Fit Advisor (Virtual Fitting Room) for apparel and footwear, the Fashion Try-On module for photo-based garment simulation, Dynamic Size Charts, and the Fashion Hub suite (Fashion Hint, Fashion Image Search, Fashion Looks), all backed by the Fashion Intelligence analytics layer. The platform is offered as a white-label, API- and headless-ready SaaS that integrates with e-commerce platforms such as VTEX and is co-sold with 3D partner Browzwear. Customers include Intimissimi (Calzedonia Group), Roberto Cavalli, Pucci, Lanidor, Osklen, BunniesJR, Miik, Ciele Athletics, and Vörr.
The company is privately held, founder-led by co-founder and Co-CEO Janderson Araujo alongside co-founder Patricia de Castro Araujo, and is angel-backed by Bossa Invest and COREangels (disclosed rounds dated 2019-2020). Revenue is generated through annual SaaS subscriptions priced on a quote basis against client traffic, store size, and module selection, with no public pricing. The firm maintains GDPR, LGPD, and CCPA compliance posture across its multi-jurisdiction operating footprint.
Sizebay firmographics
Firmographics- Name
- Sizebay
- Legal name
- SIZEBAY
- Website
- https://sizebay.com
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Sizebay is a vertical SaaS platform that provides AI-driven size recommendation, virtual try-on, and product discovery tools to fashion e-commerce retailers across more than 60 countries, helping brands reduce returns and lift conversion.
- Ownership category
- akta.pro rank
Sizebay industry classification
Industry- Product category
- Fashion E-commerce Software / Virtual Fitting Room SaaS
- NAICS
- Clothing and Clothing Accessories Retailers (458110)
- SIC
- Retail-Apparel & Accessory Stores (5600)
- akta.pro primary industry
- Apparel, Footwear & Accessories Online Retailers (CRAFADAB)
- akta.pro secondary industry
- Fashion & Accessories Marketplaces (CRAFABAA)
Keywords
Where Sizebay is headquartered
LocationHeadquarters
- HQ city
- Austin
- HQ country
- United States
- HQ region
- North America
Offices4 records
Markets served
Sizebay business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Infrastructure, Operations
Revenue model
- SaaS Subscription: Sizebay provides technology solutions for fashion e-commerce under a software as a service (SaaS) model. The platform is integrated into clients' online stores and generates recurring subscription revenue based on usage and store traffic.
- Virtual Fitting Room Solutions: Core product offering including Virtual Fitting Room, Size & Fit Advisor, Try-On technology, and dynamic size charts. Revenue generated from integrating these solutions into fashion e-commerce platforms.
- Fashion Hub AI Solutions: AI-driven product discovery and personalization tools including Fashion Hint, Fashion Image Search, and Fashion Looks. Offered as part of the integrated platform to enhance customer experience and drive conversions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | SaaS subscription pricing based on e-commerce store metrics |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Sizebay product offering
Product offeringCore offering
Sizebay provides a SaaS platform for fashion e-commerce that delivers AI-driven size recommendations, virtual try-on, and product personalization. Its core Size & Fit (Virtual Fitting Room) recommends accurate garment sizes using anthropometric intelligence, while additional Fashion Hub modules (Fashion Hint, Fashion Image Search, Fashion Looks) drive discovery and engagement, with Fashion Intelligence providing analytics. The platform integrates directly into retailers' online stores and is offered to fashion brands ranging from SMB to enterprise globally.
Product overview
Sizebay is a fashion tech SaaS platform offering a comprehensive suite of solutions for fashion e-commerce, built around its core Virtual Fitting Room (Size & Fit) combined with Try-On visualization capabilities. The platform operates as an integrated ecosystem: Size & Fit provides the foundational size recommendation engine, while Fashion Try-On adds photo-based virtual garment visualization. The Dynamic Size Charts module delivers automated product-specific sizing, and the Virtual Fitting Room for Shoes addresses footwear-specific fit needs. The Fashion Hub platform layer contains three AI-powered modules—Fashion Hint for product recommendations, Fashion Image Search for visual discovery, and Fashion Looks for AI-generated outfit combinations—all connected to Fashion Intelligence for business analytics. The platform supports operations in 60+ countries and is available in English, Spanish, Italian, and Portuguese.
Differentiator
Problem solved
Functional benefit
Products and services
- Size & Fit (Virtual Fitting Room) SaaS size recommendation and virtual fitting room solution for online fashion retailers, enabling shoppers to enter body measurements (height, weight, age) and receive accurate, personalized size suggestions for apparel, footwear, kidswear, lingerie, and plus-size categories, with category-specific anthropometric AI validated by in-house patternmakers.
- Fashion Try-On AI-powered photo-based virtual try-on capability that lets online fashion shoppers upload their own photo and see a realistic visualization of how garments fit their body inside the e-commerce experience, reducing sizing uncertainty and purchase hesitation for fashion e-commerce brands.
- Fashion Hub AI-driven personalization suite for fashion e-commerce that combines Fashion Hint (similar/complementary product recommendations), Fashion Image Search (visual product discovery), and Fashion Looks (interactive outfit visualization avatars) to boost engagement, AOV, and conversion for fashion retailers.
- Fashion Intelligence Real-time business intelligence and analytics platform for fashion e-commerce that aggregates customer interaction, sizing, and behavioral data, provides segmentation by category, age, and location, and integrates with BI systems to inform merchandising, inventory, and campaign decisions.
Quantifiable outcome
- Up to 50% reduction in returns
- +7 more outcomes
Companies that use Sizebay
Customer profileNamed customers7 records
Segments4 records
Ideal customer profiles1 record
Sizebay technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
AI capability9 records
Feature10 records
Sizebay partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered flagship and core.
- BrowzwearflagshipStrategic co-development partnership for Virtual Fitting Room technology. Browzwear's unique true-to-life 3D garment simulation capabilities are combined with Sizebay's accurate body modeling algorithms. The partnership enables online retailers to visualize garment fit, drape, and look on shoppers' own bodies. Omer Dvir, General Manager of Ecomm Solution at Browzwear, noted Ciele Athletics as an incredible partner bringing the product from concept to commercial viability. Janderson Araujo, Sizebay's Co-CEO, emphasized the brand's dedication to reviewing size recommendations as crucial for partnership success.
- VTEXcoreSizebay's Virtual Fitting Room solutions integrate easily with VTEX, a composable and fully integrated commerce platform built for mid-market and enterprise retailers. The integration enables fashion brands to address front-end fit and sizing challenges while leveraging VTEX's unified storefront, order management, and marketplace infrastructure. Clients have reported 3x increase in conversion rate, 50% less returns, and 10% increase in AOV when combining VTEX with Sizebay solutions.
Scale indicators9 records
Recent moves6 records
Expansion highlights5 records
Sizebay competitors and assessment
Company assessmentOthers
- VueStorefront (now Storefront UI): Vue Storefront is a headless commerce frontend platform with integrations for fashion try-on and fit tools. It is an ecosystem partner comparable to Sizebay's VTEX integration and to its headless, API-first distribution approach.
Broad incumbents
- Snap Inc. Snap owns Fit Analytics and ships AR try-on features inside its platform used by fashion brands. As a broad incumbent, Snap competes with Sizebay on both AR try-on accuracy and on enterprise distribution to fashion retailers.
- Walmart (Zeekit): Walmart acquired Zeekit to power virtual try-on at scale inside its marketplace. As a broad incumbent with overlapping virtual try-on technology, it represents both a competitor and a benchmark for retail-scale deployment.
Direct peers
- True Fit: True Fit is a direct competitor providing AI-driven size and fit recommendations for fashion and footwear e-commerce. It competes head-to-head with Sizebay's Size & Fit Advisor and shares the same enterprise retailer customer profile.
- Reactive Reality (avatour): Reactive Reality provides AI-generated avatars and virtual try-on technology for fashion e-commerce. It overlaps directly with Sizebay's Fashion Try-On and Fashion Looks avatar capabilities.
- Vue.ai: Vue.ai offers an AI platform for fashion retailers spanning product tagging, personalization, visual search and virtual try-on. It directly overlaps with Sizebay's Fashion Hub modules (Image Search, Looks, Hint) and its enterprise fashion retail GTM.
- Fit Analytics (Snap): Fit Analytics, acquired by Snap, is a direct competitor in size and fit recommendations for apparel and footwear e-commerce. It targets the same fashion retailer customer base and competes on recommendation accuracy.
Emerging players
- Obsess: Obsess builds 3D virtual stores and try-on experiences for fashion and beauty brands. It overlaps with Sizebay's virtual try-on and Fashion Looks product discovery use cases for premium fashion retailers.
- Bold Metrics: Bold Metrics provides AI-driven body sizing predictions for apparel retailers, directly comparable to Sizebay's Size & Fit Advisor. It focuses on predictive sizing from shopper data inputs.
- 3DLOOK: 3DLOOK builds body scanning and measurement AI used for fit and sizing in apparel e-commerce. It is comparable to Sizebay's anthropometric intelligence layer, though with a different capture modality.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks5 records
Key highlights6 records
Customer concentration
Sizebay social profiles
Digital presenceSizebay compliance and trust
Trust signalCompliance3 records
Sizebay financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sizebay leadership team
Management profileNumber of profiles
Profiles3 records
Sizebay funding detail
Funding detailFunding overview
Funding rounds4 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sizebay M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sizebay
What does Sizebay do?
Sizebay provides a SaaS platform for fashion e-commerce that delivers AI-driven size recommendations, virtual try-on, and product personalization. Its core Size & Fit (Virtual Fitting Room) recommends accurate garment sizes using anthropometric intelligence, while additional Fashion Hub modules (Fashion Hint, Fashion Image Search, Fashion Looks) drive discovery and engagement, with Fashion Intelligence providing analytics. The platform integrates directly into retailers' online stores and is offered to fashion brands ranging from SMB to enterprise globally.
Is Sizebay a public or private company?
Sizebay is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Sizebay founded?
Sizebay was founded in 2014. It employs 51 to 100 people.
Where is Sizebay based?
Sizebay is headquartered in Austin, United States, in the North America region.
How does Sizebay make money?
Three revenue lines are on record. SaaS Subscription is the primary driver. The others are virtual Fitting Room Solutions and fashion Hub AI Solutions.
Who are Sizebay's main competitors?
VueStorefront (now Storefront UI) is listed as an others. Broad incumbents are Snap Inc. and Walmart (Zeekit). Direct peers are True Fit, Reactive Reality (avatour), Vue.ai and Fit Analytics (Snap). Emerging players are Obsess, Bold Metrics and 3DLOOK.
Does Sizebay have an API?
No public API is recorded for Sizebay.
What industry is Sizebay in?
Sizebay's product category is Fashion E-commerce Software / Virtual Fitting Room SaaS. Its primary akta.pro industry code is CRAFADAB, Apparel, Footwear & Accessories Online Retailers, with a secondary code of CRAFABAA, Fashion & Accessories Marketplaces. Its NAICS code is 458110 and its SIC code is 5600.