MIPS EQUIPPED – MIPS stands for multi-directional impact protection system, which is a leading slip-plane technology inside the helmet designed to reduce rotational forces that can result from certain impacts. FUSION IN-MOLD CONSTRUCTION – A process pioneered by Bell that bonds the Helmet’s outer shell to the EPS foam liner to create a sturdier helmet. COVERAGE – Extended rear coverage for additional protection while you ride. FIT SYSTEM – Lightweight fit system with an easy turn dial allows for a comfortable fit. COMPLIANCE – Complies with the U. S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. SPECIFICATIONS – Recommended for adults ages 14+, but will most with heads measuring 53-60 cm. Important: always take a head measurement. Head sizes and shapes can vary, even within an age range. Using a helmet that does not fit can be dangerous.