When ripping down the trail the last thing you need to worry about is if your helmet will protect you in a crash'. '.strtoupper('t')hen again you don't want to be stuck wearing a full face on every trail ride'. '.strtoupper('t')his is why we created the ambush the lightest and most ventilated extended coverage helmet available'. '.strtoupper('b')ull patented aramid reinforced skeleton provides internal eps support.bull patented energy optimized multi density eps construction helps to manage impactenergy.bull mindset 360 fit system provides a secure customizable fit with 360 degree tensionadjustment five height positions and an integrated dial for easy on the fly adjustments.bull micro indexing visor allows for a wide range of fast secure on trail adjustments as well asconvenient goggle stowage.bull 4th dimension cooling system with massive vents internal cross channels and alignedexhaust ports increases airflow to keep you cool.bull low profile in molded shell with smooth snag free exterior shape.bull extended coverage for added protection and durability.bull lightweight quick drying liner features a gutter action brow that channels moistureaway from eyes.bull tri fix web splitter for improved comfort and ease of strap adjustments.bull mips equipped'. '.strtoupper('d')oes not include angi crash sensor available to purchase separately