Compact Tactical Design: Smaller and lighter than the ThermoBak, ideal for use in vehicles and confined spaces Mil Spec Crux Reservoir: 85oz capacity delivers 25 percent more water per sip with external fill access for quick refills Fully Insulated: Keeps water cooler for longer in hot or high-intensity environments Quick-Release Straps: Side-release shoulder straps allow for rapid removal in critical situations Rugged Construction: Built with 500D double-rip Cordura fabric for exceptional strength and long-lasting durability