"Fitness-Mad's Resistance Tubes are made from a multi-stranded rubber core with a protective nylon covering, which prevents the possibility of a sudden tube failure, that can occur with latex tubing. The rubber offers natural and progressive resistance and avoids the possibility of latex allergies. Available in 3 strengths with comfortable integral foam covered handles. The resistance level is marked on the handles to make identification easier when using in a class or studio environment. The tube comes with a user guide featuring 10 key resistance exercises for a total body workout. Product details: Dimensions: 130cm length Material: Multi-stranded rubber core, foam handles Max product stretch: 3 times original length Strengths: Light - Light Blue / Medium - Pink / Strong - Dark Blue"