Features: Boost Strength & Tone: daily minutes of use activate and strengthen hips, glutes, core—targeting multiple muscle groups to enhance strength, improve physique and shape effectively. Triple Resistance Set: 20/40/60 lbs (yellow/beginner, red/intermediate, blue/advanced). Ideal for strength training and rehabilitation. Specifications: Material: latex and NBR foam Color: yellow, red, blue Size: 11.81×5.91×1.97 inches Package includes: 20 Lbs X Loop Resistance Bands 40 Lbs X Loop Resistance Bands 60 Lbs X Loop Resistance Bands Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays