The Persist was created for cyclist that look for a stylish helmet with a tailor-made fit. No more mushroom-look here. The adjustable VaporFit™ system provides a customized fit, while the MIPS® liner adds an increased level of protection. The Persist features 21 optimally placed vents that work with internal air channels to keep you cool and comfortable. The AirEvac™ system efficiently pulls hot air off of your eyewear to prevent fogging. Pass-through channels allow eyewear to be easily stored on the front of the helmet. Product Code: EAHMT3AL0160 Smith Optics Persist MIPS Road Bike Helmet | Road Cycling Helmet UK