OXO Strive Stir Insulated Tumbler, Watermelon Fitted silicone straw creates a seal to prevent leaking from the top of the lid Double-Wall construction prevents condensation; fits in most car cup holders Swiveling silicone straw is perfect for stirring and angled for comfortable sipping and comes apart for easy cleaning Large opening for filling, cleaning and adding ice and a soft, comfortable, non-slip grip 20 oz. capacity; BPA free