The Crossover Cords feature a unique handle to carabiner configuration allowing for easy setup on a chain link fence or using the CS Door Belts, Crossover SRS, or CS Wall Mounts The Crossover Cords feature a unique handle to carabiner configuration allowing for easy setup on a chain link fence or using the CS Door Belts, Crossover SRS, or CS Wall Mounts Available in 6 resistances AVAILABLE IN SIX RESISTANCES: The Crossover exercise cords from Crossover Symmetry are available in six resistances to help improve shoulder health for a wide variety of individual fitness levels. Cord tension ranges from 3 lbs for novice users to 40 lbs for elite athletes. Massively Improve Shoulder Performance and Reduce Pain Crossover Symmetry shoulder health resistance bands are medically designed and proven to improve shoulder strength and athletic performance. They are used by 20 MLB teams, 10 NFL teams, 75% of NCAA division 1 universities, PGA tour players, military, fire, police and more. Designed For Safety Inferior resistance bands can snap and cause injury. Crossover Symmetry exercise bands are wrapped in a high strength protective nylon sleeve, that protects you from getting injured if the band snaps during use. These nylon sleeves prevent over-stretching of the resistance cords, and are also designed to protect the Crossover Cords from damaging UV-rays in outdoor training environments. Crossover Cords are the safest, most durable cords on the planet, and have been independently tested to last over 15 times longer than the previous model. Ready To Use Simply mount the Crossover Symmetry resistance cords to an appropriate anchoring point using the unique handle-to-carabiner configuration and get started with your workout. These exercise cords are available in six (6) resistance levels to suit any individual fitness level: Super Light 3 lbs (Green) Light 7 lbs (Purple) Medium 10 lbs (Yellow) Heavy 15 lbs (Red) Super Heavy 25 lbs (Blue) The Bronco 40 lbs (Orange) *Access to the Online Training Zone only available through purchase of the Shoulder System Package