1. Material: natural latex2. Function: correct leg shape, tighten back, arm plasticity, etc.3. Uniform thickness, smooth cutting4. Using rubber stock solution, it is not easy to break when stretched5. The soft material is easy to fold and carry6. Pull force: 20 pounds (1500x150x0.35mm pure color); 25 pounds (double color); 28 pounds (2000x150x0.35mm pure color)7. Dimensions: 1500x150x0.35mm, 200x150x0.35mm8. Weight: about 78 grams

http://olla.gr/3-pcs-latex-yoga-stretch-elastic-belt-hip-squat-resistance-band-specification-1500x150x0.35mm-pure-red/