Usage Tips:1. Car Cup Holder Expander is upgrade version. The upper cup holder for car is suitable for regular car cup holder with a diameter of 3.14 inches. The lower cup holder for large tumblers, bottles and cups up to 3.7 inches wide, so far has compatible with 32 to 40 ounce bottles in 3.4inch-3.7inch Diameter. This cup holder in place doesn't shake, secured holds weight well in the cup holder your drink within comfortable reach. 2. TRAY FOR EXTRA STORAGE- Tray attaches to upper cup holder, it can be 360 degree stable rotation and load-bearing 40lbs weight. Tray can be utilized for food, snacks, keys, phone or small accessories. There is rubber to keep items on the tray from moving around or making any noise at all. If you usually spend lots of time on the road and always eat while you drive, our cup holder really . 3. EXTENDABLE BASE- Adjustable base expands from 2.36inch to 3.54inch, make sure a sturdy base. You can twisting it loosens or tightens the grip. The cup holder expander base that expands to fill the console cup holder to fit different vehicles, such as boats, trucks, RV's and golf-carts. Easy and rigid installation. There is rubber to keep your hydro-flask from moving around or making any noise at all. 4. UNIVERSAL DESIGN - Our cup holder expander fit most car cup holders, but car's cup holder design varies greatly, may not be compatible with certain styles of cup holders, such as cup holders that have a shape, are angled sharply, have a cover that up or in, or are located where the dashboard hangs over the cup holder. please make sure to measure your vehicles' cup holder to fit Product Name: Car Cup Holder Expander Colour:Black Material:plastic Size:L Package Contents: 1 x Car Cup Holder Expander 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.