CORTEX Powerbags are excellent training tools, great for safe strength training as it sits comfortably on shoulders and can be easily handled with heavy duty seat-belt like handles. Features - Strong heavy duty PU Leather - Filled with a blend of Sand & PP Cotton - Durable Strap handles for easy handling - Colour coded for different weights - Perfect for strength, speed, explosive movement training - Won't damage flooring when dropped Weights & Sizes: 15kg - 54cm x 21.5cm (L x Diameter)