The SeaSucker Large Dry Box is a safe storage option. This dry box is designed to replace the large dry box on the SeaSucker 4-Cup Holder with Large Dry Box and 2-Cup Holder with Large Dry Box. This clear plastic dry box has a lid that seals with a gasket to keep water out. Secure latch closure.• Overall: 8"L x 4.5"W x 4"H• Interior: 7.5" x 3.5" x 3.5" Made of clear plastic with lockable lid & lanyard Replaces the large dry box on SeaSucker 4 & 2-Cup Holders with Large Dry Box Interior measures 7.5"" x 3.5"" x 3.5""