Really love this thing. It goes on all my adventures with me know. Bought it for a trip to explore mayan ruins and cenotes in mexico. It has now climbed mountains in the New Mexico wilderness, trekked across Death Valley, across the Joshua Tree wilderness, Traversed Old Rag and a decent part of the Appalachian Trail. It as yet shows no signs of wear. I sweat a lot and it is super easy to rinse out. Great buy.