Premium Material: This Forearm Grip Strengthener is made from quality silicone material, which is sturdy and wear resistant, allowing for long term repeated use.Simple Design: The Hand Grip Strengthening tool features a simple design with a large mesh hole pattern, providing you with multifunctional strength training options.Multifunctional: The Wrist Resistance Web can assist you in various exercises such as grip training, thumb or single finger strength training, wrist flexibility exercises, and forearm strength training.Wide Application: With its compact structure and lightweight design, this Power Training Net is easy to carry and ideal for use at home, in the gym, indoors, or outdoors.Practical Gift: This Power Strengthener makes a practical gift for your family members or friends who like strength training and fitness activities. Specification: Material:SiliconeYellow:5kg to 8kg ResistanceRed: 8kg to 12kg ResistanceGreen: 12kg to 17kg Resistance Size Chart: Diameter 17.8cm/7.01inch Package Includes: 1Hand Exercise Web Note: Please allow slightly errors 1-2cm differences due to manual measurement.