The BoatMates Folding Drink Holder is an all-resin folding drink holder that has no metal parts to rust or corrode. Unique double-ring collar assembly holds both standard beverage cans and can cozies. The front opening in both rings allows for various size mugs with handles. The double rings also accommodate most 12-20 oz. water bottles. Can be mounted with Super-Suction cups, or with screws. Screw hole pattern allows for replacement or retro-fit of existing folding drink holders.