Keep your pack and your gear dry

　　No one likes a soggy backpack, so everyone should have some sort of pack cover. The Storm Cell is designed to keep your Granite Gear pack dry, but it'll work great with any pack out there. Granite Gear chose a lightweight ripstop fabric for their rain covers and designed them to securely attach to the pack, so they won't fall off while you are hiking.

　　Sizing:

　　Medium fits packs from 3300-4000 cubic inches / 54-66 L

　　Large fits packs from 4500-5500 cubic inches / 74-90 L

　　X-Large fits packs from 6000-7000 cubic inches / 98-115 L