S1 Mega Lifer Helmet Elbow Sizing Guide from the Manufacturer

Sizing Guide from the Manufacturer is as follows:

Product details from Atom:

The trucks of the Arius Platinum also receive a significant update

which can be mixed and matched for a highly customized ride

Sold in a pair

S1 Mega Lifer Helmet Elbow Sizing Guide from the ManufacturerA bigger helmet for large heads (23" 25. 5"). The S1 Mega Lifer Helmet is designed to be worn while riding your skateboard, bicycle, roller skates and scooter. The S1 Mega Lifer Helmet is the safest, best selling, and best fitting certified high impact and multiple impact helmet on the market . You can call it a skate helmet, bike helmet, roller derby helmet, roller skate helmet or scooter helmet because it offers the best protection while skating,