Blue Metalflake - Daytona Low Profile D.O.T. Open Face Helmet The Lowest Profile Helmets Available on The Market   The helmets comes in 9 different sizes which means you're guaranteed to find the perfect fitting helmet. Each helmet also includes: Protective draw string cloth bag Goggle retaining strap on the rear Detachable peak Nylon chin straps Ratchet strap fastening Check out the image below. Both mannequin heads are the same size & they are both wearing a 'Large' size helmet. The mannequin on the left is wearing a Daytona D.O.T. Helmet. The one on the right a standard ECE approved helmet. Riders who favour open face helmets know that most create what is known as "Mushroom" head.  The Daytona D.O.T. range of helmets eliminate this issue as they are slimmer & give a more proportionate look in relation to all head sizes.   Why Are Daytona Helmets SO Slim? Daytona Helmets are a lot slimmer because most EU certified helmets us a one size fits all shell, and then increase the padding on the inside of the helmet as the head size decreases. Daytona, on the other hand, manufacture their helmets in 3 different shell sizes which completely eliminates unnecessary levels of padding and also give the helmet a much more proportionate fit whilst providing the required USA D.O.T. level of protection & comfort.   How to Make Sure You Buy The Right Size Helmet... Just because your current helmet is a large, don't naturally assume you'll need a large in this style.  It is important that you order the correct size by measuring your head as described below...  Measure around head just above the ears (1inch above your eyebrows). Use a cloth tape to take your measurement (or use a piece of string & then measure that) It is recommended that you get someone to help you measure in order to get accurate measurement. SIZE GUIDE XS - 51cm-52cm S - 53cm-54cm M - 55cm-56cm L - 57cm-59cm XL - 59cm-61cm 2XL - 62cm-64cm 3XL - 65cm-66cm 4XL - 67cm-68cm The Daytona range of helmets are the lowest profile helmets available & carry the USA D.O.T. safety standard certification.  All helmets worn on USA roads must meet the following: They must carry the D.O.T. stamp within the helmet design at the back of the helmet which shows it meets USA Federal Motor Vehicle Safety Standard (FMVSS) No. 218.  Full Details at links      They DO NOT meet the current UK legal requirements so UK buyers please be aware they are sold in the UK for DISPLAY ONLY They are NOT UK Road Legal All helmets worn on UK roads must meet one of the following: British Standard BS 6658:1985 and carry the BSI Kitemark UNECE Regulation 22.05 (soon to be 22.06) a European Economic Area member standard offering at least the same safety and protection as BS 6658:1985, and carry a mark equivalent to the BSI Kitemark   Full Details at link For ANY queries on the USA range of Daytona Helmets please   Call us on 0115 9635837 between 10am & 4pm. Monday - Friday. Blue Metalflake - Daytona Low Profile D.O.T. Open Face Helmet