Description: High quality elasticity PU material, light weight,adjustable and comfortable Arc-shaped aluminium inside and training ball can fix fingers and wrist in the function position. Multi-functions:separage and train fingers;increase the finger flexibility;prevent finger joint deformation and muscle atrophy. Size: One size fits most, both OK for right and left hands. Specification: Material: elasticity PU Diameter: approx.8cm/3.15inch Package Includes: 1 x Hand Training Ball
