At OnSize, every sneaker goes through a multi-step authentication process, so we can guarantee our products are 100% authentic. Every pair that passes gets a plastic card proving its authenticity. Whether you shop in store or online, you can only buy pairs that come with this card — in other words, verified pairs.

The OnSize plastic card that comes with our sneakers is unique, so you'll only find it with pairs sold by us. One side shows the OnSize logo and the words “100% Verified Authentic”, while the other has a QR code that links to this page.

Besides proving authenticity, the plastic card has another important benefit: it makes exchanges and returns possible. We can only take back or exchange a pair if its plastic card is still included and undamaged.