The Cool Off Hydration Bottle from Trudeau is perfect for long workouts at the gym because of its larger 24 oz. capacity, on-the go carabiner attachment for transportation and double wall insulation ensuring up to 2 hours of cold retention. The lid itself highlights two great features offered by Trudeau; Trulock Technology guarantees the lid leak-proof and the pop-up silicone runner†s straw is safe to drink while running.