A premium, commercial quality resistance tube Foam padded, rotating handles Plain, unmarked tubes with no visible insignias or logos Individually polybagged BULK DISCOUNTS AVAILABLE HERE If you are looking for an affordable way to train all muscle groups, then consider our resistance tubing with foam padded handles. This tube is used by everyone - colleges/schools, hospitals, professional sports teams, health clubs, and a countless number of large organizations around the world. Extremely comfortable on the hands. Measures approximately 4 feet in length unstretched. This product may contain traces of dry rubber or natural latex. Highly resistant to fading. No visible white powder residue. SPECIFICATIONS Color Max Resistance Inner Diameter Wall Yellow 4 - 5 lbs 6.3 mm 1.6 mm Green 7 - 8 lbs 6.3 mm 2.0 mm Red 9 - 10 lbs 6.3 mm 2.5 mm Blue 12 lbs 6.3 mm 3.0 mm Black 16 lbs 7.9 mm 3.5 mm Outer Diameter = inner diameter + 2(wall) If you are purchasing tubes for a large group, we suggest the yellow, green, and red resistance levels. However, the majority of your selection should consist of yellow and green tubes. Color Usage Recommendations Yellow Considered "light" resistance for most group fitness classes. Ideal for rehabilitation, beginning fitness levels, and active adults. Green Considered "medium" resistance for most women and "light" for most men. Ideal for moderately trained individuals and active adults. Red Considered "medium/heavy" resistance for most women and "medium" for most men. For overhead exercises (e.g. triceps extensions or presses), considered "very heavy" for women and "medium/heavy" for men. Blue Ideal for thoroughly trained individuals, athletes, etc. May be okay for moderately trained individuals if working larger muscle groups Black Ideal for thoroughly trained individuals, athletes, etc.