The E-Z Mount Zip-On QD Pouch is made to hold a 6 cubic foot tank. There is an elastic drawstring that securely closes the top of the pouch. You&';ll need the Zeagle Zip Mount Adaptor Kit in order to mount this pouch to your Zeagle BCD. The pouch is covered by a 12 month limited warranty. Elastic Drawstring Top Securely Closes Top-of-Pouch Nylon Elastic Band to Secure Cylinder Neck, Hold-it-Snugly-in-Position Durable Mesh with Taped and Sewn Edges for Added Strength and Durability Dimensions: 5.5 x 12" x 4" (14cm x 30.5cm x 10.2cm)