Two-drink capacity car cup holder A unique pair-shelf design lets you carry two drinks at the same time. Compact and space-saving, it fits most car cups smoothly and installs without extra hardware. Elastic cup mouth An adjustable outer cover automatically adapts to different cup sizes, coffee tumblers, and water bottles. Not recommended for tall bottles or glasses over 2.6 inches in height. Adjustable and expandable fit The base expands to fit car cup holders with diameters from 2.5 to 3.9 inches. Includes a preventive shock-absorbing pillow with sponge pads, and an adjustable left-right design to align with your car interior for a secure fit. Vibration reduction A foam pad at the bottom minimizes movement and vibration during driving. Additional pillow foam pads help fill gaps for maximum stability and protection of beverages and accessories. Use scenarios - Daily commute: keep coffee and water within easy reach without clutter. - Long road trips: secure two drinks for convenient access and reduced spill risk. - Small or irregular interiors: adjustable design accommodates varied cup holder sizes and layouts in different vehicles. Materials and compatibility Universal design with foam and sponge pad components for stability; compatible with standard automotive cup holders (2.5–3.9 inch diameter).