Farina Fitness professional long loop exercise band is made out of the highest quality of latex - natural rubber- in Malaysia, the biggest producer of rubber. Our exercise bands are specially formulated to have professional strength and an increased durability with superior tearing/snapping resistance! perfect designed for exercise, Pilates, yoga, stretching, toning, body sculpting, resistance & strength training, physiotherapy and even for point work in ballet. They are versatile, adaptable to multiple fitness levels and to facilitate the entire body workout! last but not least, they are lightweight & perfect for travel! use them at home, in the office, at the gym or even on the plane! choose from 4 different resistance levels to suit different needs: light (Yellow, 0. 59-In width x 41-in loll x 1. 5-Mm thickness), medium (green, 0. 59-In width x 41-in loll x 2. 5-Mm thickness), heavy (Blue, 0. 7-In width x 41-in loll x 3-mm thickness), x-heavy (Red, Blue, 0. 79-In width x 41-in loll x 3. 5-Mm thickness). these bands are conveniently packed in PVC travel pouch. They can be used independently, doubled up, or together. Farina Fitness offers a variety of resistance bands including flat bands, long loop bands, short loop bands, floss bands and exercise tubing. They are excellent substitutes for free weights and workout machines. No matter what your exercise needs and goals are, farina provides a solution for you to achieve more easily and conveniently.RESISTANCE in lb.-force: Yellow - 6. 8 to 12. 7 lbs.; green - 11. 5 to 20. 9 lbs.; Blue - 16. 2 to 29. 8 lbs.; Red - 21 to 38. 6 lbs. Light weight and perfect for travel. PVC travel pouch included. Long loop can be used independently, Doubled up, or stacked. Versatile, adaptable to multiple fitness levels from beginner to advance level. Professional strength - highly durable with superior tearing/snapping resistance.