The Multi-Pack Heavy Resistance Bands include four strength-resistance bands for pull-up assistance, stretching, bodyweight work, and added barbell resistance across a busy floor. Each durable latex band measures 41" and is color-coded by load: Purple (25–80 lb), Green (50–120 lb), Blue (60–150 lb), and Orange (70–170 lb) — covering everyone from beginners working toward pull-ups to lifters adding band tension to powerlifts.