Why change something that doesn’t need change? For 2021 the Peak has no changes. It has the same great look, feel, design and high performance for every rider on the water. The 2021 Peak 4D is responsive, with a firm more dynamic flex. The Reflex Walk-Out liner is very supportive and has a custom-fit feeling. You can ride all day in comfort and style! The Peak 4D is the ultimate park boot and great for boat riders as well.