['Back plate use non slip and wear resistant material, fits the frame position to ensure that the paint will not worn. Each bag is equipped with a single shoulder strap.', 'Back plate use non slip and wear resistant material, fits the frame position to ensure that the paint will not worn. Each bag is equipped with a single shoulder strap.', 'Back plate use non slip and wear resistant material, fits the frame position to ensure that the paint will not worn. Each bag is equipped with a single shoulder strap.', 'Back plate use non slip and wear resistant material, fits the frame position to ensure that the paint will not worn. Each bag is equipped with a single shoulder strap.', 'Back plate use non slip and wear resistant material, fits the frame position to ensure that the paint will not worn. Each bag is equipped with a single shoulder strap.']