HydroSHKR One bottle for all of your needs. The HydroSHKR holds 24 oz and is [double walled (SHKR and Studded SHKR) or triple layer insulated (stainless)] for insulation and durability. It comes with a Pro Lid and a SHKR grate to easily mix protein or pre-workout, as well as a tumbler lid and a straw so you can drink in a different way. The HydroSHKR is cup holder compatible, has a silicone base, and is BPA Free. Key Features 24 oz: holds up to 24 oz and cupholder compatible. Pro Lid: compatible with other HydroJug bottles. Tumbler Lid: leakproof when straw is not inserted. Straw: BPA Free and compatible with Tumbler Lid. SHKR Grate: easily removed and perfect for mixing supplements and infusing water. Double Walled: no sweat when your drinks are cold. Triple Layer Insulated: (Stainless only) including a copper layer to keep your drinks cold all day