Rock Rings are an innovative, portable training device that allows you to get a great upper body workout. Rock Rings excel at pull-up related exercises as they allow supination and pronation of the arms and shoulders. Great for home or traveling as they can be hung up nearly anywhere. Features: Good assortment of holds Large jug on top 1 deep incut, 4-finger pocket 1 4-finger flat edge 1 3-finger pocket Includes comprehensive instructions and training guide 7.5" x 6.5" x 2.5" (190 mm x 165 mm x 63 mm) Sold in sets of two: 5 lb. 4 oz. (2.4 Kg) Color: assorted swirls