Granite Gear chose a light 70D Rip-Stop fabric for our Storm Cell rain covers and designed them to securely attach to the pack. Storm Cells are designed to work with larger packs and Cloud Covers are designed to fit over our ultralight packs up to 4000 cubic inches.
Weight: 5.1 oz(145 grams)
Fits Pack: 3300-4000 ci( 54-66L)
Weight: 6oz(170 grams)
Fits Pack: 4500-5500ci(74-90L)
Weight: 6.9oz(196 grams)
Fits Pack: 6000-7000ci (98-115L)