Vail also will require helmets for all children age 12 and under who take group lessons through its schools, and helmets will be part of the resort's children's rental packages unless parents or guardians sign a waiver.
The company announced the policy Monday. It will be enforced at all five of its resorts in Colorado and California.
Vail Resorts, based in the Denver suburb of Broomfield, owns the Vail, Beaver Creek, Breckenridge and Keystone resorts in Colorado and Heavenly in California.
The company says it strongly recommends helmets for skiers of all ages.
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