New heavy Duty non skid baseimproved Ultra quite motor, new battery compartment design, and automatic energy saving mode. New extra large openingmicro fitted lid keeps odors in, Requires 3 D batteries (not included), alkaline battery highly recommended for best performance. New tier one materials used throughoutstylish brushed stainless steel finish, Elegant chrome finished trim adds a touch of style. New removable ring linerholds trash bag sturdy in place and prevents bag from overhanging for a neat and clean appearance. Use any standard trash bags or NINESTARS custom trash bags nstb 21 30.