PRO STRAP is rapidly becoming the choice of professional photographers and people who use large cameras with long heavy lenses. It"s also ideal for use on portable power packs. The patented weight reduction system makes the PRO STRAP absolutely essential for prolonged use of a heavy camera or portable power pack. Equipment instantly feels 50% lighter and 100% more comfortable when using a PROSTRAP The PRO LOOP STRAP combines all the same features of the PRO STRAP with a unique connection system for especially tight connection points. The strap loops through the connection area to form a slip knot which "falls" away freely from the camera when in use. This easy-to-attach connection system is a great alternative to OP/TECH USA"s patented connector. A simple and extremely secure system you can trust!