1/Seventeen HSF Aeria Stem Faceplate Trueing Stands and a key ring holder

and a key ring holder

*Includes clear visor

Extra large perforations in overgrip provide extremely good absorption

Temple arm scoops to manage moisture

1/Seventeen HSF Aeria Stem Faceplate Trueing Stands and a key ring holderThe HSF Stem Cap allows the Profile Design HSF Aeria bottle to be fitted to our standard 1 Seventeen stem. Performance The HSF Aeria bottle smooth's airflow onto the frame, offering the chance to lower aero drag while increasing hydration carrying capacity. To this point it has required a specific stem the new HSF Stem cap increases the options for access to the HSF Aeria technology Compatibility The HSF Stem cap is only compatible with the 1