THE LEDGE MIPS HELMET FEATURES A CLEAN, MINIMALIST SKATE-STYLE DESIGN WITH HARD SHELL CONSTRUCTION BUILT FOR STREET AND PARK RIDING. Under-the-hood muscle meets modern technology with MIPS (Multi-directional Impact Protection System), removable Auto Loc 2 Fit System and ample venting. The Ledge is super modifiable with removable goggle retainer and earpads to get just the right look. MIPS Multi-Directional Impact Protection System (MIPS) is a step forward in helmet design. There are three main components to a MIPS-equipped helmet: the interior foam liner, the Low Friction Liner and an elastomeric attachment system between them. In an angled impact, the elastomeric attachment system stretches to allow the foam liner to rotate independently around your head. The goal of this technology is to further reduce rotational forces. HARD SHELL CONSTRUCTION Hard Shell Construction produces great helmets at a great price. A rugged outer shell is molded and then attached to the EPS foam liner. STACK VENT TECHNOLOGY Our Stack Vent was developed based on research showing the majority of warm air that can cause fogging comes from the goggle's center top vent. Aligning the Stack Vent in the helmet with the center vent of the goggle helps keep it clear and fog-free. SEAMLESS COMPATIBILITY For optimal performance of both helmets and goggles, Giro products are designed to work together, ensuring a seamless interface between helmet and goggle for an exceptional fit and dependable, worry-free function.