Using your Fox Mainframe MIPs MTB Helmet is easy. Just put it on your head and adjust the MIPS™ integrated fit system until it's comfortable and secure. When you're out on the trail, the helmet's optimized venting will keep you cool, and the extended coverage will protect more of your head. Remember, this helmet is for cycling on trails, so don't use it for other activities. After a ride, if the sweat stinks up the liner, take it out and wash it. Make sure the helmet is completely dry before you use it again. Also, check the helmet regularly for any signs of damage. If it's been in a crash, it's a good idea to replace it to ensure your safety.