The combination of waterproof protection with large zip-off panels revealing FreeAir mesh makes the men's Joe Rocket Alter-Ego 2.0 the most versatile pant on the market today.; ; Rock Tex 600 outer shell Removable waterproof liner Large FreeAir mesh panel with removable cover on legs and seat Height adjustable CE rated knee protectors Melt resistant material on lower leg area Two-way leg zippers Sure Fit adjustable waistband Reflective stripe The Alter Ego 2.0 pants are over-pants, pre-sized to be worn over your street clothing