Stainless Steel back plate. Pro-Harness system with one left QR-buckle, constructed of 50mm ballistic webbing for maximum strength and with padded shoulders for better support and comfort. With concealed storage pack for SMB's and lift bags. Padded shoulder straps with two stainless steel D-rings. 50mm crotch strap with two stainless steel D-rings. Single Donut wing. Availble with 13 kg / 30 lbs or 18kg / 40 lbs lift capacity.