SFR Essentials Skateboard Bmx Helmet Blue under-20 Large: Knee 22-30cm Elbow 20-27cm

Large: Knee 22-30cm Elbow 20-27cm Also See size chart in Pictures

9/16'' socket

Can be used as just gasket knee support or as knee pads stabilizer and extra protection

Certified to EN1078 safety

53mm diameter with a 99DU hardness rating

SFR Essentials Skateboard Bmx Helmet Blue under-20 Large: Knee 22-30cm Elbow 20-27cmSFR Essentials Skateboard Bmx Helmet Blue Features: Certified to EN1078 safety, standard Shell, ABS Inner EPS Includes foam inserts for size and fit adjustment Available in a variety of great colours Designed for max airflow and protection XXS XS = 49 52cm S M = 53 56cm L XL = 57 59cm To ensure the correct sizing measure the circumference of the head.