Deskside or poolside, yoga studio or art studio, at home or on the road, youll appreciate the hydration skills of Stanleys durable, 20-oz Quencher. Double-wall vacuum insulation will keep drinks cold for 9 hours and iced for 40 hours. The lid features a rotating cover with three positions: an opening for the reusable straw, an opening for sipping, and a full-cover top to prevent splashes. Whats more, this always-reliable Quencher is designed to comfortably fit any cup holder (car, lawn chair, spin bike).