Granite Gear 13L eVent Drysack:  Ultralight waterproof sacks that are ideally shaped for easy and efficient packing. The extremely waterproof, non-pvc fabric, is lightweight and durable. The breathable eVent bottom allows air to escape as the sack is roll compressed into it's unique block shape.  Reduce weight and bulk with the ultimate cure for your waterproof drysack needs! 
 

Color: Blue

Materials:
30D Cordura Hybrid Sil-Nylon
eVent Bottom

Features:
•Forms a block shape when compressed that stacks perfectly in your pack
•Simply roll to compress. Air is forced out the eVent bottom.
•Arched rolling stay keeps Bloc open while loading/unloading and forms an easy to grab handle when sealed