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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; cascadedesigns.com