Simple stretch for hips and back — exercise resistance bands

Black Mountain Products - Ultimate Resistance Band Set with Starter Guide  Black Mountain Products Resistance Band Set with Door Anchor, Ankle Strap, Exercise Chart, and Resistance Band Bands included: Yellow (2-4 lbs.), blue (4-6 lbs.), green (10-12 lbs.), black (15-20 lbs.) and Red (25-30 lbs.). All bands are 48 inches in length This stackable set of resistance bands can produce up to 75 lbs Features a metal clipping System on bands for attachment to soft-grip handles or ankle straps Includes a door anchor, exercise chart, carrying bag, ankle strap and starter guide All Black Mountain Products come with a manufacturer's...