This is the ultralight Snack Break! LiteSkin LS07 is an ultralight waterproof pack material designed for abrasion resistance at the lightest weight possible. These weight in at 56 grams, 20 grams lighter than the standard Snack Break. Wow!! Don't carry heavy snacks or you'll lose the weight savings!
Like X-Pac VX21, this material is waterproof, but the bags are not waterproof. Seams are not sealed. They are highly weather resistant!