Harmony Super Sponge
Here's what other sites are saying:
Water sloshing around in your kayak can shorten the time you get to spend out on the water. The Harmony Super Sponge can absorb up to a liter of water, helping you extend the length and comfort of your paddling excursions. Plus, the synthetic sponge is mildew resistant and machine washable.
All sponges are not created equal. Our synthetic sponge with cellulose cover absorbs up to a liter of water, is resistant to mildew and is machine washable. This sponge is durable, compact and features a handy tie-in tether sewn to the corner.