Features
- Featuring complete Koroyd coverage and a Mips® rotational system, the Smith Mainline helmet provides exceptional protection; plus, internal air channels and open exhaust ports maximize breathability.
- With 21 optimized vents, the AirEvac ventilation system allows goggles and helmet to function as a system, venting warm, moist air away from the goggles—and away from the head
- Koroyd provides superior impact absorption, design flexibility and ventilation when compared to materials traditionally used in helmet construction
- Utilizing crumple-zone cylinders that crush uniformly on impact, Koroyd manages energy more efficiently with less volume than traditional protection materials
- Rotational motion can cause brain injuries; with Mips, a low-friction layer slides 10 to 15 mm in all directions, reducing rotational motion to the brain during impact
- Unique pad kit includes 3 sets of sized cheekpads, 2 sets of sized crown liners and 2 neck rolls to ensure a proper fit̵all of which can easily be removed for cleaning
- Pads are made from Hybrid X-Static/XT2 for antibacterial performance
- Ride with confidence, knowing the Mainline is secured with a tried-and-true D-ring chin strap fastener
- Lightweight Aerocore in-mold construction
- Adjustable visor
- Camera- and light-mount compatible
- Downhill certification: ASTM F1952
- Certification: CPSC, CE EN 1078
- E-Bike helmet certification: NTA-8776
Specifications
- Best Use: Mountain Biking, Mountain Biking, Mountain Biking
- Helmet Style: Full-face, Full-face, Full-face
- Helmet Construction: In-mold, In-mold, In-mold
- Shell Material: Polycarbonate, Polycarbonate, Polycarbonate
- Head Circumference: 20.1-21.7 inches, 21.7-23.2 inches, 23.2-24.4 inches
- Vents: 21, 21, 21
- Visor/Brim: Yes, Yes, Yes
- Weight: 1 lb. 11 oz., 1 lb. 11 oz., 1 lb. 11 oz.
- Gender: Unisex, Unisex, Unisex
To find your size, position a tape measure just above your ears and about 1 in. above your eyebrows. Keep the tape level to measure the circumference around the largest part of your head and then find the corresponding size in the Technical specs info.
