Description of Royal Robbins Discovery Zip N' Go Pants Royal Robbins' Zip N' Go Pants are perfect on the trail. They keep you warm and protect your legs in the early morning, then convert later in the day when the temperature rises. The legs pack into a stuff sack that attaches to your back belt loops. Features: Contrast inside waistband Zip secure side cargo pockets Zip off legs with hidden zippers Gusseted crotch Convertible pockets/stuff sack attaches to belt loops 9" short inseam