No-Latex tubing is made from a synthetic latex free substance that mimics the stretch and durability qualities of latex band. tubing is used for rehabilitation conditioning and especially personal training. All exercise tubing are lightweight take up minimal room and are highly portable. There are 8 progressive levels of resistance to accommodate the lightest to the strongest needs. Need an even heavier tubing- You can double up to double the resistanceorsimply use a shorter piece. is licensed to use the Thera-Band color sequence so resistance level is easily identified. All exercise products are CE certified.