The combination of true Waterproof protection with large zip-off panels revealing FreeAir™ Mesh makes the Alter-Ego 2.0 the most versatile pant on the market today. Features Rock Tex™ 600 outer shell WATERPROOF liner (removable) Large FreeAir™ Mesh panel with removable cover on legs and seat Height adjustable C.E. rated knee armor MELT RESISTANT material on lower leg Two-way leg zippers Sure Fit™ adjustable waistband Reflective stripe