Xenith Football Helmet Size Chart. Then consult the xenith x2 size chart and choose your correct size x2 helmet. Generally, the size of your chinstrap will be the same as your helmet size.
Selecting the right youth football helmet: Up to 21 (53cm) medium: The size chart is recommended as a guideline only.
It is important that you practice and play sensibly, and as always, teach or utilize proper form and head positioning when participating in football contact.
Up to 21 (53cm) medium: The helmet should fit securely. Other sizes will vary slightly in weight. The x2 can be ordered in snug sizes which include thicker comfort pillows for additional sizing options.