Adurance High Altitude Training Mask

Fits well and works great! Better than expected! The straps are comfortable on the hear and over the ears - this fit my 13 year old girl just fine, and the universal size surprisingly works for both our heads. Like the adjustability of the breathing restriction. It does get sweaty inside - as expected with a work out. But like that the rubber and plastic parts seem easily washable with soap %26 water, and the fabric part is a quick drying material. Hoping this training use will help us go from sea level to the high altitude competition!