Specification: Weight: 500G. Usage: Hiking/ Outdoor sports/ Military etc. Temperature Range: Normal. Size: 46*17''. Product Name: Water Bag. Material: TPU. Lead time: can send out quickly after you place an order. New Arrival 3L Tactical Water Bag Military Hiking Camping Water Storage Bladder MOLLE Hydration Backpack Pouch Water Bag. Size: Capacity:3L. Weight:470g. Size:18" x 7". Description: 1) - Military hydration backpack made by high density Nylon material. 2) - Able to attached on any molle backpack, vest, duty belt or body armor. 3) - 1" molle webbing throughout the backpack. 4) - Large filling port with secure seal. 5) - Bite valve design, convenient for switch on/off the flow of water. 6) - Comes with bite valve cover. 7) - Completely safe to use. 8) - With adjustable shoulder strap. 9) - Keep water cool for hours. 10) - Extra carrying space for storage. 11) - 3L hydration water reservoir is installed in the backpack