At last, a fully functional sitting box at an affordable price. The frame sitting box does everything that a regular sitting box does but due to the construction method, we are able to offer it at substantially lower prices. The frame box requires simple self-assembly which takes under 10 minutes, using the tools supplied. EVA foam padding with abrasion resistant vinyl cover. Assembled size: 38 x 66 x 25cm. Packed size: 69.5 x 41.5 x 12cm. Weight: 7kg Align Pilates - Sitting Boxes Comparison