This towel is GREAT for hot yoga. I have a lot of problems with slipping on regular towels. The grips on the bottom of this towel prevent any slipping from happening. The towel is machine washable, but I normally hang dry mine just to be sure the stickiness of the bottom of the towel doesn't wear out.
First of all yogitoes makes amazing products, so as far as a yoga towel goes this one is excellent. The Sticky-nubs on the bottom grip you mat so it stays in place, and the towel is pretty heavy duty feeling if you ask me. I purchased this in the Springburst color and absolutely LOVE IT! The light mixture of pinks, purples, grays, lavender gives me a nice calming feeling when I'm in down dog looking down at it. I love this towel, cuz Im not just covering my mat with an ugly towel, I enjoy it! Get one!
I use this mat daily for hot yoga. You can rinse it off in the shower no problem in between washes and it holds up really well for multiple uses. It sticks like glue to my mat even when I'm moving around and sweating like crazy. I also never have a problem with my hands and feet slipping on the towel itself. Definitely a worthy investment that allows you to concentrate fully on your practice!