Need ice cold water for the entire day The BIGFOOT holds almost a quart and a half of your favorite drink to quench your big thirst. Featuring our TriMax triple insulation technology, this bottle has been tested to keep liquid cold for up to 36 hours and hot for up to 8 hours. Its dual function top has a wide mouth to easily accommodate ice cubes and a convenient, comfortable drinking spout. Whether you're camping, on the golf course or just relaxing, BIGFOOT gives you the quality you've come to expect from Eco Vessel in a 45 ounce size you've always wanted. Spend more time having fun and less time refilling!