A mat and a towel are all you really need to practice yoga, but the quality of those two items matters. I recently had the opportunity to review a Youphoria Yoga Towel. It's a 100% microfiber, non-skid yoga towel.
This towel is super light weight and absorbent. You can tell just by feeling the towel that it will offer substantial grip for your feet and hands. In practice, it does provide a nice grip but also has the advantage of absorbing sweat so your mat stays nice and clean.&
It's super easy to wash (machine washable) and is light enough to carry along. My only complaint was the durability. I imagine it would last for quite a while, but after the first machine washing, my towel had a large snag that ran the entire length of the towel. It's obviously still usable but not as attractive.
I did wash my daughter's hoodie in the same load and it's possible that the zipper grabbed a hold of the towel during the wash. So I am willing to admit that the snag might accidentally be my fault. It's still a little annoying to have it snag within the first week of use.
I received one or more of the products mentioned above for free using Tomoson.com. Regardless, I only recommend products or services I use personally and believe will be good for my readers.