The BirdRock Home Cupholder Expanders are a set of two adjustable cup holder inserts designed to accommodate larger cups, mugs, and water bottles in your vehicle. The adjustable base expands to fit standard cup holders ranging from 2.5 to 3.75 inches in diameter, and each expander holds cups or water bottles up to 3.7 inches in diameter. A large side slot makes it easy to use cups and mugs with handles.

Installation takes only seconds — place the expander into your existing cup holder and twist the base to lock it securely in place, gripping tightly to prevent spills and accidental tipping. The expanders are compatible with a wide variety of vehicle makes and models, including cars, trucks, and SUVs. Each unit measures 4.5" L x 4.5" W x 6.25" H, weighs 0.5 lb, and comes in black. This pack includes two cupholder expanders.