Our Helmet for Rafting from RiverGear.com is a great one size fits most option.
Adult helmets …. Adjust the helmets from interior components … the circumference measures from 22″-24 1/2″ when fully adjusted out.
A child sized helmet is now available in color yellow only. This helmet shell is scaled down in size for a better fit for children and offers a circumference of 21″.
An adult XL size is now available in color black only. This shell is much larger than the regular sized helmet which allows for larger heads AND necks.