Product Details This boat sponge works to remove that unwanted pool of water that manages to collect under your kayak spray skirt. Paddling in whitewater or the sea, this sponge will lift out sand and moisture from the bottom of your boat that traditional bilge pumps leave behind. The Deluxe Boat Sponge can absorb up to 24 ounces of water at a time. It can be used with a bilge pump or on its own to keep your boat dry and clean. Covered with terry cloth to increase water absorption. Dimensions 8"L x 4.5"W x 2"H Specs Dimensions: 8" L x 4.5" W x 2"H Material: Terry cloth cover