The 12 oz Straw Cap with a raised grip oval sleeve pattern. TheStraw Cap delivers upright, spillproof sipping (no tippingrequired). The 12 oz is an ideal everyday companion that fits intohandbags, backpacks and car cupholders. The volume works well foractive kids as well as adults seeking a smaller capacity, lighterweight bottle. All caps from 16 and 22 oz bottles will fit on the12 oz bottles.