ultra 33The Bora Ultra WTO 33 2-Way Fit rim meets ETRTO tubeless standard for fast-rolling tubeless tyre fitment, and is also suitable for tubeless-ready and clincher tyres too.Purchased color: 33 KHAKI. How it fits: True to size. I'm 5'3 and 130lbs. Small fits me perfectly. This is very similar to the lululemon Daydrift pants that I