Pro-Tec Resistance Bands Fitness Equipment : The Pro-Tec Resistance Bands provide a useful training tool to help athletes work on muscle strengthening, toning, and to improve mobility. These premium quality latex bands are durable and will not break. Make using these helpful bands a part of your training regimen to get a leg up on the competition! Each package includes three 24 x 2 width bands with varied resistance levels. The pack also includes an exercise guide with helpful tips on how to use the bands.