FUNCTIONAL FITNESS – These long, closed-loop resistance body bands can help improve strength, agility, and flexibility. Work your muscles through a full range of motion and in every plane of movement for healthy, fit body that transfers to daily life. SUPER STRONG & DURABLE – Heavy duty latex provides exceptional resistance, as well as strong support for exercises like muscle-ups and pull-ups PERFECT FOR TOTAL BODY WORKOUTS – The 41-inch bands are long enough to suit any height, and can be looped twice or combined with other bands to shorten or increase resistance. Ideal for Crossfit WOD’s, powerlifting, agility exercises, and assisted stretches. YOUR WOD PARTNER – Durable XFit bands are great for supporting you as you work on gaining strength and trying new movements. When you don't have a workout partner, you can use them to assist you in pull-ups, muscle-ups, band sprints, push-ups, and stretching. MULTIPLE RESISTANCE LEVELS – Black: 60-150 lb; Blue: 50-120 lb; Red: 40-80 lb; Green: 30-50 lb; Yellow: 10-35 lb. Buy just one or the whole set to continue increasing strength and progressing in your fitness goals.