Studies show these bands build strength, improve flexibility, and boost recovery. Now, you can harness their lightweight, portable power for yourself. Inside, find the expert instructions you need to build your healthiest, strongest body yet. Perfect for those with latex allergies or sensitivities. Flexibility: great for stretching and resistive movements to increase range of motion. Strength: proven as effective as dumbbells and weight machines for increasing strength. Versatile exercise tools with detailed instructions. Not made with natural rubber latex. 3 resistance band set, includes: 1 yellow, 1 red and 1 green TheraBand Resistance Band.