This 4-piece exercise band set includes bands with in 3 different resistance levels: green light (2-4 lbs), blue medium (6-8 lbs), yellow heavy (10-12 lbs). This allows the user to go from beginner to more advanced strength training. The bands come packed in a drawstring bag with instructions and basic exercises. 4.50" W x 6.50" H (bag), 11.75" W x 2.00"H (bands). Product color Yellow, Green, Blue (bands), Black (bag). Material 210D Polyester (bag), Latex (bands)