The DOMKE FA-100 Backpack Strap is made to work with DOMKE camera bags or satchels. It is a comfortable harness that allows gear to ride low on your back. It attaches instantly to the existing hardware on the bag. Comfortable Harness Compatible With: DOMKE F1X, F2, F3X, F4AF, or F7 Series Bag DOMKE F804 Or F805 Series Bag DOMKE J1, J2, or J3 Bags SKU: 725-100 Available in Black Material Nylon Attachment Method Attaches to hardware already on bag Weight 8.0 oz (226.8 g)