Height-adjustable back section and buckles on the straps for a perfect fit. Breathable and lightweight material. Strengthens back muscles and can prevent tension. Padded shoulder straps. Machine-washable up to 40°C. S/M/L for 150–185 cm tall users. L/XL for body heights of 165–205 cm. Made of polyester. Approx. 12.1x4.2x18 cm.