Protect your pack and its contents from inevitable summer thundershowers with the Sea To Summit Ultra-Light Pack Cover. At only 4 ounces, ultralight freaks wonAAAt notice it in their packs, but they will notice their dry gear after the clouds open up. This pack cover features a seamless construction for extra weather protection and a mid-back keeper strap that holds it secured to the pack. The cover comes with its own integrated stuff sack for stashing it away once the storm passes.