Features: NATURAL LATEX: Sunny Health & Fitness resistance bands are made of over natural latex which means they’re stronger, more durable, and more elastic than rubber, TPE and most other materials commonly used in resistance bands. ODOR FREE: Avoid any unpleasant, industrial, or synthetic aromas that may get on your clothes or distract you from your workouts; These resistance bands are odor free. EXTREME RESISTANCE: Looking to push your strength workouts even further? These advanced resistance bands offer an intense solution for advanced users. When used and elongated to 3x its length, it will produce resistance of 100 lb. ECO-FRIENDLY: In addition, natural latex is a non-synthetic organic material which may be completely broken down and biodegrade which attribute to its eco-friendliness. VERSATILE: Resistance training improves muscles strength and resistance bands are an effective and cost-efficient way to add resistance training to any workout. STRENGTH TRAINING: Use in conjunction with strength training equipment such as squat racks and power racks to add a whole new dimension to your lifts and reps. Specifications: Size: 81.9L x 2.2W x 0.2H in Available in 100 lb, 140 lb, 160 lb, and 180 lb resistances.