JBM International via Amazon offers the JBM Unisex Bike Safety Helmet in
several colors Black/White (pictured) for $16.90. Coupon code "B3Q4E7I9" drops them to $10.98. Plus, Prime members bag free shipping. That's $39 off and the lowest price we could find. It features PVC, PC, and EVS foam, lots of vents, and an adjustable dial system to change the size and fit.