Please note: Seatbox shown in the images sold separately. • Designed specifically for the Matrix Superbox • Quickly and easily transform the box into a 2 wheel transport system • Inserts supplied for use on both the S25 & S36 Superbox • Packs away neatly into the supplied carry bag • Removable, height adjustable handles with ergonomic rubber handgrips. • Supplied with 2 Solid puncture resistant wheels • Quick release system for removing the wheels at your peg. • Height adjustable support for rods / holdalls