As easy to carry as it is to love, the Hydroflask 12oz WideMouth Water Bottle may be small in size, but it packs just as muchpunch as its bigger Hydroflask counterparts. Even if you're justheaded to the gym for a short session, the double-wall 18/8stainless steel construction keeps cold liquids chilled for up to24 hours and hot liquids hot for up to six.