This Mainstays double wall plastic Tritan bottle is 32 oz and with silicone sleeve and chug lid. It is made of BPA-free plastic materials. It has 2 colors (rich black/pearl blush) available for your selection. The lid could be interchangeable with the lids of other 24 oz and 40 oz Mainstays hydration SS bottles. The Tritan material makes the bottle impact-resistant and durable. The Double-wall sweat-free design prevents condensation. The silicone sleeve provides a considerate grip feeling. Wide Mouth make it easy to add ice.