Gadjit Cup Keeper Cup Holder Adapter 2 Pk Expands Car Cup Holders That Are 2 5 3 Wide To Hold Beverages That Are 3 25 Wide Like 18 20 21 24 Oz Hydro Flasks 12 18 20 30 Oz Yeti Tumbler 20 24oz Naglene Bottles Other Coffee Travel Mugs With Bottoms Up To 3 25 In Diameter Black