Fit Passport

Check your size on the product page you are looking at, using your Fit Passport — with the reasons and where every number came from.

Fit Passport tells you which size to buy on the product page you are looking at, and why. Click it on a clothing product page. It reads the page's size chart and size options, weighs them against your Fit Passport — your measurements if you gave them, your preferred fit, and the clothes you own that fit well — and answers with one size and the reasons behind it. When two sizes are equally good, it says so instead of guessing. • Second-hand listings: no size chart? It reads the seller's measurements (pit to pit, length) and tells you whether the item is likely to fit. • Save to buy: keep a product on your to-buy list, separate from your closet, and move it into the closet once you own it. • Private by design: it reads a page only when you click, and only the tab you are on. It sends a reduced copy of the product's title, size chart and size options — never forms, your cart, your account or reviews — and shows you exactly what will be sent first. • English and Chinese. You need a free Fit Passport at fit-passport.vercel.app; no sign-up form — open the site once and you have one.