Tronco Margarita & Cocktail Tumblers

The newest family, and the first one built for the evening rather than the commute: a squat, stemless 16 oz cup whose clear Tritan lid has a rim made for salt or sugar and lets you sip from any side, with one bent and one wide straw for frozen drinks. It comes in two bodies. The borosilicate glass version shows off layered cocktails and stands on a removable silicone foot; the double-wall steel version gives up the view for shatterproof poolside duty, ice that lasts for hours and a dry outside. Both are sold singly or in sets for hosting.