The K series models have progressive rockers with 45-degree corners and straight sidewalls, which provide quicker rotation and surface tricks that any other wakeskate on the market today. With the soft top EVA deck, this board is excellent for dialing new tricks without the pain. This series is made by cold press construction, using the highest marine grade waterproof glues to ensure the life and bond of the deck. The K decks are 9-ply horizontal laminated boards that are constructed out of maple and bass woods - long grain and cross-grain formula - and sealed with three layers of Polyurethane sealant that are applied 24 hours apart from each application providing a hard durable furniture quality finish. The K series features a plastic base sheet with sublimated graphics for a long lasting durable print and a centered rocker pattern. Also, these boards are a little more affordable, so you can buy both sizes.