Speed sack with waist belt for speed, power training. It has the advantage over the conventional speed sleds that it is smaller, more flexible and easier to handle and fits in any sports bag. Sack size: 50 x 32 x 16 cm. Due to the 5 removable weight bags, the resistance can be individually adjusted and changed depending on the training goal. Weight bag size 33 x 20 x 0.5 cm, max weight...