Giro Tyrant Spherical Adult Dirt Bike Helmet - MTB & Off-Road Motorcycle Safety Gear for Trail Riding & Motocross Racing

This helmet was given a 10/10 in protection by OutdoorGearLab so it seemed like the best option for me to use while biking in city streets. The helmet is well built, has MIPS, and has Giro Spherical system. The backside height can be adjusted to several positions to ensure a comfortable fit.The major drawback about this helmet, and maybe all Giro/Bell helmets (same parent company), is that they are made for oval heads. According to their sizing chart, I'm a medium, but the helmet is painful to put on because it crushes the sides of my head. I tried a size large, and that fits the width of my head, but there is so much extra space in the back, that the ratchething system doesn't get snug enough to provide me a safe fit.Specialized makes "round fit" helmets (though not like this helmet style) if anyone is struggling with this issue.