RAM Mounts Level XL Cup Holder with Tough-Claw Mount RAP-B-417-400UDesigned for bigger insulated cups, plastic water bottles or even your reliable steel coffee cup, the Level Cup XL keeps your drink upright, regardless of the conditions The oversized opening cradles the biggest of gulps and the adjustable bottom piece moves up and down to accommodate taller cups The rubber feet flex to fit various sized cups as well RAM Mounts has refined the selfleveling action to keep your cups full Utilizes a patented rubber ball