by Jonathan Vatner | March 18, 2010
platypus water bottleDesigned for backpacking, the Platypus rolls up when empty. That means it doesn't take up space in a briefcase or handbag. Half-liter Platy SoftBottles cost $7.95 each; contact the manufacturer for large orders; discounts are available on orders of 500 or more. (800) 527-1527;