Unknown Koi Crewneck is an amazing addition to our Unknown collection. Staying true to the core values of Progress products, the Unknown Koi Crewneck boasts precision craftsmanship and bears the iconic Progress Jiu-Jitsu Unknown Koi design.

Check out our full size chart above ⬆️

We all train BJJ at Progress and we know what you expect when you buy a crewneck from us: long lasting quality, comfort and style. We can say from experience, our crewneck are the real deal and the real customer reviews only back us up. If you ever have any (rare) issue with your Progress crewneck, please get in touch with us by e-mail support@progressjj.co.uk or on social media @progressjj and we'll do our best to fix any issues you have. That's a promise!

We always recommend washing your Progress crewneck on a cold wash. If you have to wash hot, please do not exceed 30 degree. Do not use a tumble dryer, only hang dry, all our tees are quick drying so it will only take a couple of hours to be ready to roll again. Never use bleach!