The Blackhawk Matrix Hydration Backpack is designed for mountain rescue professionals. The Matrix Hydration Backpack is constructed to perform at the highest levels, while minimizing weight. This is a great pack for those trips when you don't want everyone to know who you are and what you do. The drink system is protected by Microban® antimicrobial technology. It also has a market proven bite valve and patent pending quick disconnect system. This hydration backpack has numerous storage and attachment points.