Features: 1. Suitable for Exercise: Fitness bands are great for recovery and injury prevention and can be used to apply resistances to specific muscles from any angle making them the best choice for exercise. 2. Easy to Carry: Fitness bands can be folded away and fit right in your pocket. They can be used for unlimited strength and fitness workouts you can use them as yoga elastics for stretching or strength training belts. 3. High-Grade Material: Fitness bands are made of knitted fabric and adopt embedded latex yarn design they are longitudinal weaved and embedded latex yarn. More suitable for stretching they are not easy to break and have good elasticity. 4. Strong Pulling Force: The gray fitness bands are 2080* 3.5* 0.25cm with 25 lbs pulling force. Pink bands are 2080* 3.5* 0.35cm and they have 35 lb pulling force. Black bands are 2080* 3.5* 0.5cm designed with 50 lb pulling force. 5. Multifunctional Uses: Fitness bands provide effective training for all kinds of workout calorie burning muscle building and weight loss workout programs to work arms shoulders chest buttocks legs and more. Specification: Product Name: Pull Up Assistance Bands Size: Gray- about 2080x 3.5x 0.25cm/ 818.9* 1.4* 0.1 inches 25lbs pull weight 100g Pink- about 2080x 3.5x 0.35cm/ 818.9* 1.4* 0.14 inches 35 lbs of pull weight 105g Black- about 2080* 3.5* 0.5cm/ 818.9* 1.4 * 0.2 inches 50 lbs pull weight 120g Length: about 2080cm/ 818.9 inches/ 68.24ft Material: Fabric + latex silk includes: 1 * Pull Up Assistance Bands or 3pcs * Pull Up Assistance Bands