Stay hydrated wherever you go with the Mercury Tactical Gear 3 Day Hydration TAC Pack. This tactical hydration backpack is MOLLE compatible and made from durable 600D polyester. An expandable main compartment provides ample storage space for notebooks and gear, while an organizer pocket securely holds pens and other small items. A cushioned back panel and padded shoulder and waist straps evenly distribute weight, reducing stress to pressure points. The 3L capacity HydraPak Hydration System is made from BPA-free silicone and lightweight Thermoplastic Polyurethane (TPU) that can expand up to 8x its original size without breaking. From the track to the trail, the Mercury Tactical Gear 3 Day Hydration TAC Pack has your back every step of the way.