Premium TPE Material: Non-toxic, odorless, hypoallergenic, eco-friendly, durable (≥100,000 stretches), retains elasticity even in cold temperatures, skin-friendly texture for comfortable long-term use 5 Color-Coded Resistance Levels: From light(10-15lbs) to extra heavy(30-40lbs), suitable for all fitness levels from beginners to advanced users, allows progressive resistance training Targeted Glute Activation: Focuses on activating gluteus maximus, minimus and medius while reducing thigh engagement, effectively "lifts" and firms buttocks, perfect for enhancing hip curve Versatile Full-Body Workout: Ideal for squats, lunges, hip thrusts, side steps, yoga poses, Pilates exercises and upper body training, replaces multiple gym equipments Portable & Space-Saving: Lightweight(65g each), compact design, easy to carry in gym bag or pocket, perfect for home, gym, travel or office workouts