Soft Weight ball, red, 1-1/2kg, 3.3lb. Developed for therapists and trainers as a safer alternative to conventional free weights. Soft Weights™ are designed with a soft cover and pliable filler free of any hard edges or rims. Each of the six sequential weights is 4½� in diameter. Use for strengthening, plyometrics, balance training, mobilization and functional grip strength development. The design supports one or two hand activities, is comfortable to hold and fits into any gym bag. Product photo may not exactly match the product offered for sale. Please refer to the product description.