The FatSac 15' Inflatable Bumper works great to protect your boat from scratches dents and dings during boat tie ups & lake parties but also will protect your when pulling up to or chilling at the dock. This Monster of a bumper can be hung off the side of the boat or off the side of the dock. Inflate & hang bumpers from the side of the dock, you can leave them hanging all day so you don't have to worry when your boats on the dock whether you stopped to grab some lunch or just to pick up more friends & grab more gear to keep on wakeboarding or wake surfing!