Stay safe on the soccer field when you sport this head guard by Storelli(R). You'll reduce the effects of G-forces by up to 50% when you add this gear to your gameday routine. The lightweight, padded construction delivers impact absorption, ventilation and temperature control throughout the season. Pull on the Storelli(R) ExoShield HeadGuard. FEATURES: Head guard Reduces the effects of G-forces by over 50% through padding Constructed with lightweight, open-cell viscoelastic foam, identical to that of combat-grade military helmet lining Provides superior impact absorption, ventilation and temperature control Sleek design aims to stylishly protect Thickness: 9 mm Width: 2 in. at the smallest point (front and side) and 3.5 in. at the back Style: HGUARDBK SIZE CHART Measure the largest circumference around the head. Be sure to keep in mind how you will wear your hair during use as it will affect the fit. Size 1: 20-20.5" Size 2: 20.5-21.25" Size 3: 21-21.75" Size 4: 21.5-22.25" Size 5: 22-22.75" Size 6: 22.5-23" NOTE: If your head measures between sizes select the size based on desired fit. If you prefer a relaxed fit, go with the larger size, if you prefer a tighter fit, go with the smaller size.