S/M comfort liner is for the medium shell sizes.
This bridge the gap from the XS/S helmet shell to the M/L helmet shell. But they only fit the M/L shells. So it tightens the fit on the Medium for someone that the Small is too tight, and the Medium is too loose.

6D ATR-1 Camo Helmet, XL
Arai MX-V Stars & Stripes Motocross hjelm
Polisport Oil Braker - 500 ML
Tuff Jug Quick Cap Lug Ktm
Moto Pro Oil Measure - 1000 ML
Arai Black
EKS GO-X Zip-Off Visor, 3-pack
Arai White




