6mo test: 3D-printed KAV Rhoan aero helmet vs normal helmets

How comfortable is a a 3D-printed helmet? And how does it hold up to wear and tear? I tested the KAV Rhoan for six months against other helmets as I traveled the US and Europe. James Huang's visit to KAV Sports' 3D printing facility: https://substack.com/home/post/p-170710465 The Cyclist Lawyer: https://www.thecyclistlawyer.com/ Want to see what I'm testing and where? Follow me on Strava: https://www.strava.com/athletes/ben-delaney on Instagram: https://www.instagram.com/ben_delaney -- The Ride is supported in 2025 by: Castelli clothing: https://www.castelli-cycling.com/US/en/ HOVERAir self-flying cameras: https://amzn.to/3ZCzb9V Perc coffee: https://tinyurl.com/fjr7nurr (save 15% with code 'ride15') Saris racks: https://saris.com/collections/racks# (save 15% with code 'ben15') Silca maintenance: https://silca.cc/ (save 10% with code 'theridewithbenjune2025') BikeTiresDirect: https://tinyurl.com/yc7vxujh (save 10% with code 'THERIDE') The Cyclist Lawyer: https://www.thecyclist-lawyer.com/ Shimano shoes & glasses: http://tinyurl.com/ye274tep Feedback Sports stands & tools: https://bit.ly/3S9Dq8r -- 0:00 overview 2:18 how KAV 3D prints 4:25 what I like 6:50 what I don't like 10:03 The Cyclist Lawyer 11:43 what I'm unsure about 13:29 summary