This set of 2 raised bed liners is the perfect solution for positioning your raised bed on a patio or other hard surface. Measuring 97cm wide and 25cm high, the liners are made from reinforced PE which is heavy duty and rip proof. There are 6 drainage holes in the base of each liner, and we recommend that an inch of pea shingle or gravel is placed at the base of the liner before filling with compost. This is to ensure that the compost is free draining and the holes do not get blocked with debris.