SPRI Xertubes provide an easily portable, highly versatile way to add resistance training to your workout. Constructed of durable rubber with secure plastic and webbing handles, Xertubes are suitable for a variety of toning exercises, body types, and fitness levels. Each Xertube is color coded to a specific resistance level, so you get the workout that best suits you. SPRI also includes a strap that lets you safely secure the tube to a door for additional target activities. The kit comes with two illustrated charts of exercises, including bicep curls, shoulder presses, and back extensions. Designed for light and speedy mobility, the strap can be rolled up to be easily placed in a gym bag or suitcase.

• Key Features:
• The Xertube is ideal for home use or while traveling
• The door attachment allows you to turn the Xertube into a home gym by adding more training options
• Includes two exercise charts
• Measures 5 inches wide by 7-3/4 inches tall by 2-1/2 inches deep
• Yellow offers 3 lbs. of resistance when stretched to 1.5 times its normal length, and is recommended for beginners
• Green offers 6 lbs. of resistance when stretched to 1.5 times its normal length, and is recommended for moderatly fit beginners
• Red offers 10 lbs. of resistance when stretched to 1.5 times its normal length, and is recommended for moderately fit to fit users
• Blue offers 15 lbs. of resistance when stretched to 1.5 times its normal length, and is recommended for fit to very fit users
• Purple offers 20 lbs. of resistence when stretched to 1.5 times its normal length, and is recommended for extremely fit users