"II" on the heel pull tab

A security zip

Double Shield ABEC 7 Bearings

the rest of the sizes are in adult sizing

Not compatible with three or four-piece splitboards

Bones STF Retros V3 99A 54mm protection "II" on the heel pullDo your best not to break your bones when skating with the Bones STF Retros 99a V3 Slims Wheels. Manufactured with Bones Street Tech Formula, giving you more slide ability with less flat spots creating a wheel with a substantially higher rebound for more speed and amazing slide capabilities. Manufactured in the U. S. at the Bones factory in Santa Barbara, California, these wheels are skater engineered. Features: Anti flatspot urethane V3 Slim Shape