Velcro© brand touch fastener storage pouch (VELCRO© is a registered trademark of Velcro Industries B. V.) * Opening for threading cannula on side of bag * Vertical horizontal or backpack configuration * 15.75 (H) x 4.33 (W) x (at base) x 8.00 (at widest point) * Compatibility: Bonsai-M4 M6 M7 M9 Evolution-M4 M6 M7 M9 & C cylinders