MILITARY.COM  >   SHOP HOME  >  MILITARY GEAR  >    >    >     Adventure Clothing   BDUs, Camos   Dogtags, Patches, ID   Field, Camping, Travel Gear   Fitness Supplements   Flashlights   Gift Ideas   GPS, Compasses, Radios   Knives & Tools   Manuals, Books & Videos   Personal Protection   Rappelling, Ropes   Repair Supplies, Concealment   Surplus   Survival & First Aid   T-Shirts   Tactical Gear   Vision: Sunglasses, Night Vision   Watches, Wallets, Organizers   Writing Supplies   View Cart   Customer Service   MONEYBACK GUARANTEE®   KeywordItem No. Click on an image to enlarge. CamelBak, the hydration experts, make the best hands-free on-command delivery systems in the world. Maximum™ Gear is ruggedized and designed to withstand the rigors of military duty. Standard gear for all branches of the Military. Hydrate or Die!® Heavy activity and burning hot days can cost your body more than a liter of water per hour. It must be replaced or heat stress will make you a casualty. For every hour of activity, you should drink 1 liter/quart of water (6 to 8 ounces every 15 minutes).