If this is the only thing to complain about it must be a great product

Size: 9cm x 14cm Diameter: 14mm

Technical Description EC34/28

but you'll have a few extra mm's of travel on hand for when you need it

Giro Manifest MIPS Helmet - L - Matte Olive PLP|EMTB Optimised If this is the onlyThe Manifest is a Trail style helmet with that is packed with premium features designed to optimise comfort, airflow, and protection. The helmet has a deep fit with extended coverage at the temples and rear, and ventilation that rivals some of the best road helmets on the market. This is Giro's top of the line MTB helmet and they've been uncompromising in their quest to design the ultimate open face helmet for off road riding in rowdy terrain. Who's