SMITH MAINLINE REVIEW - All day full face helmet for enduro mountain biking rides?

Review of the Smith Mainline. Buy the Smith Mainline - https://smithoptics.pxf.io/DVJzra Subscribe ► https://www.youtube.com/bike198?sub_confirmation=1 With 21 vents, can this full face helmet be worn all day on mountain bike rides? We test the Smith Mainline and see how it performs on hot, humid days on the trail. Smith Mainline - https://smithoptics.pxf.io/DVJzra #mountainbiking #mtb #enduromtb Follow on Instagram - https://www.instagram.com/bike198_official/ Follow on Facebook - https://www.facebook.com/bike198/ Support our Affiliates JensonUSA - https://bit.ly/3lKnPu2 Competitive Cyclist - https://bit.ly/2H4epuG Backcountry - https://bit.ly/3j5Uvw6 Trek Bikes - https://bit.ly/3nYtf6E Social CBD - https://bit.ly/3k5NMDM 0:00 Intro 0:32 Smith Mainline Specs 1:27 What is Koyord? 1:57 How does it fit? 3:03 Where we tested the Mainline 3:32 What is good about the Mainline 5:44 What is bad about the Mainline 8:11 Final Thoughts on the Mainline