•All of the resistance bands are made of latex (TPE free), no odor and have different strengths so that you can increase the intensity of your exercise gradually. •Improve muscle in arms, legs, ankles, back & buttocks in-home or workplace or anywhere you like, no need to pay more money for gym or exercise tool. 12" Bands Set can effectively improve Muscle Strength & Overall Flexibility. Suitable for women and men of all fitness levels. •Each durable exercise band has a different strength. Light Band in Yellow, Medium Band in Red, Heavy Band in Blue, X-Heavy Band in Green, XX-Heavy Band in Black. Resistance band set can be stretched further - Great for Stretching, Warm-Ups, Home Workouts, Physical Therapy, Yoga, Pilates & Crossfit! •Flexible bands are lightweight, durable and compact so you can take them along in a purse or briefcase or included a carry gift box. All the products before sent out have to be passed our strict quality inspection. This ensures the quality of our fitness bands.