1945 style full motorcycle helmet Original U.S. WWII M1 McCord Front Seam with Westinghouse – International Military Antiques Dimensions Size Length Width Trek 700 for $70 Size:7.5 M / 8.5 W boy_appliqueromper

1945 style full motorcycle helmet Original U.S. WWII M1 McCord Front Seam with Westinghouse – International Military Antiques Dimensions Size Length Width Trek 700 for $70 Size:7.5 M / 8.5 W boy_appliqueromper

Trek 700 for $70 is it a good deal? : r/xbiking

Bike also has front shocks and a seat shock for added comfort and a kickstand

boy_appliqueromper

Size:7.5 M / 8.5 W

The other factor that can affect a helmet's aero efficiency is your head position

Dimensions Size Length Width Height Weight XS 13 1/4 10 10 3.47 lb S 13 1/4 10 10 3.34 lb M 13 7/8 10 3/8 10 1/4 3.72 lb L 13 7/8 10 3/8 10 1/4 3.59 lb XL 13 7/8 10 3/8 10 1/4 3.47 lb 2XL 13 7/8 10 3/8 10 1/4 3.34 lb