Pure2Improve's Jelly Finger Expanders are a product designed for training and strengthening the fingers, thumb and forearm muscles. The Jelly Finger expander allows you to perform simple exercises that involve stretching your fingers to improve strength and tone up the hand, wrist, and forearm muscles. One of the most fuss-free finger extension bands, this device is perfect for people who have just come out of wrist or hand surgery, have a sports injury, or suffer from arthritis or tendonitis.•Exercising between individual fingers is possible and promotes the specific coordination of the fingers with each other.•Simple to use and easy to integrate into almost any training condition. Features:•Strengthens the fingers, thumb and forearm muscles.•Promotes specific coordination of the fingers with each other.•Simple to use and easy to integrate into almost any training condition.