SKLZ Impact Baseballs (12 Pack) Baby glasses It features a double ear

It features a double ear design that is NOCSAE approved and is pre-drilled for face guards and contains snaps for use with a chin strap

Accommodating heel cup helps stabilize and support the foot

80% cotton

With an ultra-lightweight feel and big barrel profile

SKLZ Impact Baseballs (12 Pack) Baby glasses It features a double earConstructed with proprietary pop back material similar to the material used to make car bumpers, Impact Baseballs keep their shape and won't crack like standard practice balls even after thousands of swings. Built to provide instant feedback on contact, they help hitters tune their swings to find that all important sweet spot. 9 inch Regulation Training Baseballs.