The TiLT Formula Deck is the successor of TiLT's original deck, the Theory. The Formula features a cut out on the bottom of the deck which reduces weight, and is better than a completely flat bottom because it produces less friction. Less friction means smoother grinds! The updated welded dropouts will also make for extremely smooth grinds. The Formula comes in 5 different sizes, this is the 6.5" wide by 22.8" long version. This size is going to be ideal for riders who want foot and grind space. The sizes larger than 6" will be harder to move around, so please reach out to us if you need help choosing a size.