TRAINING AID: Does not interfere with . Improves ball handling and reaction time against . Assorted Occasions to Use: the basketball dribble training equipment is not only suitable for playing basketball, but also perfect for playing football, tennis and other diverse kinds of sports, bringing you more and happiness not easy to deform or break, and can be for a long time; The glasses have no lenses, do not need to worry about being broken, and the surfaces are and comfortable to touch, easy to wear HOW IT WORKS: Unique design helps train players to dribble and handle the ball without looking down. Restricts Downward Vision During Practice of Dribble & Handling the Ball. Considerably Adjustable Design: the frame of the basketball training glasses is about 8.5 x 2 inches, and the strap can be adjust from about 13 to 24 inches, suitable for diverse kinds of head circumstance, not too tight or too loose, and hard to fall off, bringing you a nice and different experience Colour:black Material:TD90 Package Contents: 3 x glasses Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.