Made from the same material as wetsuits, DolfinPack goes from hiking to running to surfing seamlessly. The neoprene, just two millimeters thick, helps keep water cool. The entire pack weighs under six ounces with adjustable straps to prevent sliding and bouncing.
To drink, switch the tube’s valve “on” and get a steady flow of water. Use the extra space in the pack to carry keys or other stuff (but if you’ll be going in the water, or if your stuff will be harmed by condensation, put it in its own waterproof bag).
Plastic drainage rings at the bottom keep the pack from getting water logged when you’re in the ocean. The switch on the valve prevents salt from getting in, too. It’s even suited for some cold weather sports, because the neoprene keeps your drink from freezing.
This amphibious pack makes staying hydrated an anytime, anywhere a reality.