Hand Grip Balls, Hand Squeeze Ball Strengthener Therapy Exercise Tool for Men WomenFeatures: -- Our hand squeeze balls are strong, durable and safe. -- Compact size allows you to fit it in your pocket, handbag or gym bag. -- Help improve grip strength, hand endurance, dexterity, muscular tone and fine and gross motor skills. -- Five resistance levels: 15 hardness (yellow), 20 hardness (orange), 25 hardness (red), 30 hardness (blue), and 35 hardness (green),.Specification:Material: Silicone Color: Multi-color Diameter: 5.3cm/2inch Applicable Gender: Unisex Suitable seasons: All seasons Applicable occasion: Indoors & OutdoorsPackage Included 1 x Hand Grip BallPromise If the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.