What are the hand grips with foam handles? The hand grips with foam handles ensure of a totally comfortable grip. The hand grips with foam handles feature resistance springs which help to increase the strength of the forearm & hand grip. The hand grips will strengthen the muscles in your arms, wrists & hands, this can also help to improve your performance during sports such as mountain climbing, weight lifting, motocross, horse riding & gymnastics. When can I use the hand grips with foam handles? The hand grips with foam handles can easily be taken anywhere for an instant workout for your hands & they will easily fit into your sports bag. How do the hand grips with foam handles work? The hand grips with foam handles are suitable for use in both left & right hands. They are really easy to use, simply squeeze the foam handles together for effective strength training. The hand grips are also ideal for sports training as well as being very beneficial for those who have injuries.