The Smith Women's Compass MIPS Snow Helmet uses smooth, flowing lines and elegant finishing details to complement the it's low profile ultra-light In-Mold Construction. Combining AirEvac 2 ventilation and soft women's X-Static lining beneath a refined collection of designs, the Compass is the ideal helmet for women of discriminating tastes. MIPS is used to reduce the rotational forces to the brain in the case of an oblique impact. Smith helmets are created to absorb direct impacts very efficiently and when combined with MIPS, Smith helmets absorb oblique forces better by allowing a small rotation of the outer shell relative to the liner.