IMPROVE CORE AND SHOULDER STRENGTH- This pair of 4KOR Fitness cords is a durable and convenient option to build core and shoulder strength and stamina. This item only includes a pair of resistance cords based on the pound rating of your choice, and does NOT include the exercise charts, door belt, or attachments. This pair of resistance cords is compatible with the 4KOR Elite Forces Strength System.

DESIGNED FOR SAFETY- This pair of 4KOR resistance cords are designed with safety in mind. Each resistance cord is wrapped with a high strength protective sleeve that protects the cord from the sun, over-stretching, and injury from breakage.

MOST DURABLE HOLE AND PLUG CONNECTION- The hole and plug connection between the resistance tube and the end members is designed to be safe and durable. Able to withstand thousands of repetitions.