When I’m out for just a day, I don’t want to waste time pumping water. This 32-ounce dip-and-sip filter let’s me refill in about 10 seconds, then I’m back on the trail. Flow rate is impressive (I didn’t kill myself sucking water through the straw filter), and it takes care of all the protozoa and bacteria I need to worry about in the Northwest. Bonus points: It can be adapted to use with my hydration system, a faucet, or in ultralight mode (where you slurp directly from the water source). $55; 5.5 oz.; sawyerproducts.com.