Hydro Flask Insulated Stainless Steel Leakproof Water Bottle 21 Oz

• Amazon now offers the Hydro Flask leakproof insulated tumbler, 21 oz (621 ml) stainless steel, now $20.97 (list price $34.95).
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: The worst part of carrying water on the go is finding a puddle in your bag when the cup leaks. This one screws on tight, so even upside down it won't seep. The 21 oz (621 ml) size holds enough for half a day, and the stainless steel interior keeps ice water cold well into the afternoon. The slim body fits in car cup holders and backpack side pockets, and the purple color is easy to spot outdoors.