The elliptical shape of the high volume 100 Litre bin is ideal where there is heavy pedestrian flow or narrow footways. Ellipse is extremely well made from thick gauge stainless steel - the lid is 8mm thick! It comes with a heavy duty polyethylene liner as standard that is accessed by a lockable hinged front door. Cam locks are in stainless steel. Inner plastic bag liners (not supplied) used in combination with the rigid liner is common practice.