Buff. Hands down one of the best purchases Ive ever made. A shemagh is breathable, more so then a bandanna, and are a great item, but IMO a buff is alot more usable. I have mine in my pocket all the time(which you cant do with the shemagh). Dries quick, doesnt get too rank, and wicks moisture better. They do make an arctic one as well for colder enviroments, and one with insect reppelant. I just have the plain ol Buff.