The Slammer integrated dock fender protects boat and dock alike. No matter what, protection is always in position. The problem with boat fenders is that they are not always in position to work. Wind may move them, they may be hung too high or low, or your angle of attack may render them ineffective. That’s why we make Slammer, the integrated dock fender that’s built into the dock so it’s always in the right position. The Slammer fender is made of a waterproof foam core completely enclosed by a polyurethane-coated fabric (used in marine inflatables). The pad sections slide easily into a track system that will last forever.