The track bases are in thick MDF with hardwood side supports whichgive good resistance to flexing. Rounded corners avoid injuries.Support feet link with the support frame which provides a robustsystem for height adjustment. Complete with run off ramp to bridge the gap between track and floor when required. Made of Hardwood. Ramp size: 30cm (W) x 120cm (L). Complete with height adjustable support (max height is 65cm) and run off ramp to bridge the gap between track and floor when required.