The Antidote is your lightweight solution to portable hydration--a reservoir engineered to meet and exceed the demands of military and combat environments. Fashioned from durable, thermoplastic polyurethane film that is 100% BPA/BPS free, the pouch can hold up to 3 liters of water. The insulated QL HydroLock drink tube is treated with UV guard technology and reinforced to withstand abrasion from everyday wear. Additionally, QL HydroLock allows for convenient one-handed on/off of your water flow, ensuring a secure seal of contents. Quick Link accommodates attachment of any CPC accessory (inclusive of the USMC filter) with ease.