SECURE FIT IN THE CUP HOLDER: The Tumbler is designed to interlock with the mountable Cup Holder to prevent accidental drops during movement. 18/8 STAINLESS STEEL: construction allows insulated tumbler to withstand the rigors of daily use. DOUBLE-WALL VACUUM INSULATION: Tumbler keeps your drink hot or cold all day long by minimizing heat transfer REMOVABLE SLIDER: The tumbler lid features a slider that can be removed for easy cleaning 20 OZ TUMBLER: Strikes a balance between capacity and portability STACKTECH AND GARAGE TILE COMPATIBLE CUP HOLDER: Cup holder mounts on StackTech accessory attachment points and Garage Organization Steel Slot Tiles/Rails QUICK RELEASE BUTTON: For fast removal and repositioning of the cup holder DISHWASHER-SAFE TUMBLER: For quick and hassle-free cleanup Color:Black Material:ABS+Stainless Steel Package Contents: 1 * Vacuum Cup Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.