Allows for Greater Control Over the Resistance Weights. Bands can be combined for different resistance levels * Five Individual Resistance Band Set Is made with the Highest quality of Synthetic Rubber to ensure a maximum life * Band includes Black=2-4 Lbs, Green=5-8 Lbs, Red=9-12 Lbs, Blue=13-16 Lbs, Yellow=17-20 Lbs * Includes carrying bag and starter guide to help you with your home exercise * All KAZE Sports resistance bands come with manufacturer warranty