Since 2001, the Phenix QuadShocks have become the "Standard" in back pack straps for carrying disc golf bags. The QuadShock backpack straps provide the ability to balance the weight of your disc golf bag over your hips instead of off to one side of your body allowing the spine to hold its natural, straight and aligned shape. QuadShocks come with 4 carabiners which connect to the front and back of your disc golf bag. Each strap features lastimer construction (heavy duty elastic) for shock absorbing performance, high-quality nylon outer fabric and inner mesh for cool comfort and superb durability as well as QuickAdjust for a perfect fit. Using the QuadShock backpack straps means less stress on your spine, less fatigue, more pleasure and longer endurance.