(2). 1 anti-falling D-ring on the back.
(3). 2 D-rings on the waist for positioning.
(4). Lumbar pad belt provise comfortable support during long positioned working hours.
(5). This model with fireproof material and also can use insulation model.
(6). Adjustable shoulder, thigh, waist and chest strap.
(7). The position of chest strap can be adjusted vertically.