1/Seventeen HSF Aeria Stem Faceplate Trueing Stands Reflective 3M® logos on three

Reflective 3M® logos on three sides increase visibility at night

and a key ring holder

Temple arm scoops to manage moisture

The precisely engineered technology in every lightweight YONEX feather shuttlecock is extensively checked and tested to guarantee consistent performance

9100 isn't a typo there

1/Seventeen HSF Aeria Stem Faceplate Trueing Stands Reflective 3M® logos on threeThe 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