This deal has ended.
eBags now has a coupon for an extra 10% off Camelbak Closeouts through 4/30, which cuts the Camelbak Hydropak to only $17.99. Shipping adds $4.95, coming to $22.94 shipped. The HydroPak, designed for on-the-go sports hydration, has a 50 oz. resorvoir (equivalent to two large water bottles) and an external zip pocket. Of note: first-time Google Checkout users can get an additional $10 off discount.