?retrospec retrospec dakota adult bike helmet for men & women - multi-sport protection with abs shell, eps foam, 10 vents & removable washable padding for bmx, skating, scooter and skate - helmets for adults large matte eggshell is up for auction in Sports & Outdoors. The current bid is $1.00, 97% below the $29.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.