Fly High Yamaha Jet Boats Custom 21 FatSac - C1046 - 725lbs - Open Box Hero while the 3D Heat Moldable

while the 3D Heat Moldable Pro Liner adapts to the shape of your foot for a personalized experience

This surf style shape features rounded rails up front for more forgiving turns and more buoyancy to keep the nose above the water

The soft liner and open-toe design make it adaptable for various foot sizes

Belly Channels: Gives an additional grip

Fly High Yamaha Jet Boats Custom 21 FatSac - C1046 - 725lbs - Open Box Hero while the 3D Heat MoldableThe Fly High Yamaha Jet Boats Custom 21 FatSac is designed to be tied down to the swim platform step of your 21' Yamaha, adding 725lbs to the rear of your boat so you can get wakesurfing. Applications: Fits 2017 and newer 21' Yamaha Boats. How to use it: BEFORE filling the bag with water, fill the bag with air to establish your tie downs to secure the bag. Once you've established your tie downs you can fill the bag with water and be confident the bag