YKK = premium, which means that it wont break or lock up and the zip head wont get stuck. The zipper teeth are coated with high strength plastic to increase durability. Its also UV treated so the sun wont bake and fade it.
The foam is cut in different shapes through different panels in the front, back, and sides. Shaun tells us where to put it, he wants more around his ribs and sides, mainly where the impact from a fall hurts the most. He wants comfort and mobility through the shoulders.
INTERNAL DUAL BUCKLE DESIGN
This USCG approved type 3 (look at vest terminology page for details) vest has 2 buckles and a front zip. Internal or enclosed straps are a premium features because they reduce the potential for twisting, snags, or tangles.
INTERNAL MESH DRAIN PANELS
Water finds its way into the vest (between the foam and neoprene) so these drain panels flush the water out to keep it light.
U.S. COAST GUARD APPROVED