The MB-4 was designed due to many requests by our customers to have more storage with our drink holder. Based on our popular MB-2- the MB-4 holds even more things like camcorders- cameras- wallets- keys- cell phones- tackle- even will hold up to 3 drinks if needed. If you have the room this versitile drink holder will be a favorite on the boat. Dimensions; 19 x 5 x 3 1/2 tall- box measures; 9 3/4 x 3 3/4 x 3 tall. Lifetime Warranty.