Features: brand new and high quality Essential exercise fitness equipment. Easy to carry, enhance the for palm strength any for time, anywhere. It adopts the highly elastic sponge material, which is lightweight and odorless. It can be utilized for hand grip and finger rehabilitation exercise to promoting blood circulation, relieving stress, increasing hand muscle strength and preventing muscle atrophy. It is widely utilized in the daily exercise and health-care. Perfect for the elder, rehabilitation groups, the mouse hand, ladies, and so on. Specifications: Material: PU Weight: approx.25g Color: Yellow Diameter: approx.7cm/2.75in Quantity: 1Pc Note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Pc x Stress Relief Ball