Baker Audio Bern Size Chart 52 53.5 cm XS 53.5 55.5 cm Small 55.5 57 cm Medium 57 59 cm Large 59 60.5 cm XL 60.5 62 cm XXL 62 63.5 cm XXXL The Bern Baker Ski Snowboarding Skate BMX Multi Sport Visor Helmet is a multi impact visor helmet without vents for non motorized snow skate and BMX sports. This helmet has a breathable waterproof patented Brock Foam trade. Brock Foam offers multi impact performance porosity and breathability and 3D airflow. Air and moisture circulate in any direction without the risk of absorbtion. Brock Foam is also very resilient and returns to its original shape after impact thereby offering protection for multiple impacts. Bern talked to athletes and watched sessions go down. From dirt jumping trail riders to the X Games slopestyle the core rider wanted a visor lid that didnt look and fit like a batting helmet. Bern did something unique they paid attention and then went into the lab. The Baker get it while it lasts from the originators. This is not a helmet but a hard hat. It provides multi impact added head protection. This is an option for someone who does not wear helmets regularly and wants comfortable stylish head protection. Features: Includes Bern "8 Tracks" DJ style headphone speakers 8 tracks: A wired audio solution that seamlessly integrates into helmet Compatible with all audio devices Hard shell low profile fit and feel Brock Foam Liner: Multi Impact Performance Porosity and Breathability 3D Airflow The best foam on the planet for use with action sports. Element Liner System: Winter to Summer removable snap out knit liner system Eyewear channels: Make wearing glasses more comfortable Twin Clip: Removable Customizable Goggle Clip Audio: Works with Bern "8 Tracks" Audio Earphones Weight: 17 oz.