Shuck full-cut Helmet Like a pea in a pod – wearing the Shuck helmet feels natural‚ fitted and secure. With a tough ABS shell and multi-impact EPP liner‚ the Shuck protects you from the kinds of hits kayaking‚ rafting and other watersports can serve up. Dial in your fit with the occipital stabiliser keeping the helmet secure and seated in place. The quick drying fabric liner cups your head‚ Polygiene treated to keep it fresh (it\'s washable too). Materials ABS injection moulded plastic shell Expanded polypropylene (EPP) multi-impact foam liner Adjustment Dial adjustable occipital stabiliser Adjustable straps with side release buckle Weight 577 g (L) Certification Approved to CE watersport safety standard EN1385 Other Features   CE approved Our safety hardware and helmets belong to the CE group of PPE (personal protective equipment) and are certified to the required European Conformity directives. Read more Polygiene Wear more, wash less. A permanent fabric treatment which inhibits the bacteria responsible for that unpleasant damp gear smell. Polygiene’s Bluesign approved treatment is manufactured in the EU using low concentrations of silver salt recovered from recycled electronics. Chin strap protector   Shuck AP4000 AP2000   S M L S L One size Circumference 51 – 55 cm 55 – 58 cm 58 – 61 cm 51 – 55 cm 56 – 60 cm 52 – 58 cm   20 – 21.5\" 21.5 – 23\" 23 – 24\" 20 – 22\" 22 – 23.5\" 20 – 23\"