The biggest Hydro Flask for long days, big missions and keeping plenty of water on hand. The 64 oz Wide Mouth Bottle is built from durable stainless steel with TempShield® double-wall vacuum insulation to keep drinks cold for up to 24 hours or hot for up to 12.

The wide opening makes it easy to fill and add ice, while the leakproof-when-closed design keeps things secure on the move. A half-gallon of insulated capacity for camp, road trips, beach days and anywhere you need more water to go the distance.