CALGARY, CANADÁ - 21 DE JUN DE 2015: Los atletas tienen una competencia de patineta amistosa. La ley de California requiere que cualquier persona menor de 18 años use un casco mientras monta un monopatín . - Foto e imágenes de stock

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competition in Calgary. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard Show Off in Calgary. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

Calgary, Canada - Jun 21, 2018: Athletes have a friendly skateboard Show Off in Calgary. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.

CALGARY, CANADA - JUN 21, 2015: Athletes have a friendly skateboard competetion. California law requires anyone under the age of 18 to wear a helmet while riding a skateboard.