Lightweight Hydration Packs from CamelBak. Packs for mountain biking, trail running, adventure racing, and day hiking. CamelBak has become the industry leader in hydration and continues to evolve. Hydrating your body during your outdoor adventure is one of the most important steps you can take to keep yourself healthy and injury free. CamelBak has built its reputation by engineering products that exceed consumer expectations for quality and durability. CamelBak introduces the Got Your Bak Lifetime Guarantee for all reservoirs, backpacks, bottles and accessories.