High-quality materials: the trimmer shoulder strap is made of soft padded material and the shoulder strap is made of hard nylon, which is durable Comfortable to carry: the double shoulder strap has a soft, safe, comfortable and breathable shoulder padding. The hardness is adapted to compensate for the weight distribution between the shoulders COMFORTABLE AND CONVENIENT: The shoulder strap design of this backpack mower can distribute the weight of the heavy mower to the shoulders and back, which is flexible and convenient Adjustable shoulder strap: comfortable nylon strap, adjustable and durable, suitable for men and women of different body types Exquisite design : This product is your best partner for using heavy duty power tools in the farm or in the garden. Can be connected to various high performance tools such as brush cutters and chainsaws