Featured Entrepreneurs

Since 2010, MassChallenge has accelerated 2,344 startups that have raised more than $5 billion in funding, generated more than $2.7 billion in revenue, and created more than 126,000 total jobs. 

Our startups

Be inspired. Search our startups.


Unsize believes size labels don't fit and personalizes an experience where you can find clothing online without thinking about size or gender. We know something will fit by trying it on but there is no equivalent for online shopping. This design problem causes 30-40% of all clothing bought online to be returned. Unsize cures this for retailers while eliminating the question of “will this fit me?” for online shoppers through a connected measuring device and apparel recommendation app.
Unsize eliminates the question of “will this fit me?” for online shoppers while making fashion more inclusive.

Connect with Unsize


2018 Finalist Boston

Sub industry

Art & Fashion

Additional Industries
Internet & Web
Internet of Things
Online Commerce & Marketplaces
Retail & Advertising Technology
Social Impact


MassChallenge strengthens the global innovation ecosystem by accelerating high-potential startups across all industries, from anywhere in the world.