Daytona Fit Finder
Helmet Size Chart
Approximate adult measurements. Enter your head circumference to find your recommended size.
Find Your Size
Measure your head, enter the number below, and we’ll match it to this size chart.
How to Measure
Measure approximately 1 inch above the eyebrows and around the widest part of the head. Use a soft measuring tape and do not overtighten.
Approximate Adult Measurements
Use this chart as a general sizing guide. Final fit may vary depending on head shape and comfort preference.
| Helmet Size | CM | IN | Hat Size |
|---|---|---|---|
| 3XS | 41–43 cm | 16 1/8"–16 7/8" | 5 1/8–5 3/8 |
| 2XS | 43.5–45.5 cm | 17 1/8"–17 7/8" | 5 1/2–5 3/4 |
| XS | 46–48 cm | 18 1/8"–18 7/8" | 5 3/4–6 |
| S | 48.5–50.5 cm | 19 1/8"–19 7/8" | 6 1/8–6 3/8 |
| M | 51–53 cm | 20 1/8"–20 7/8" | 6 3/8–6 5/8 |
| L | 53.5–55.5 cm | 21 1/8"–21 7/8" | 6 3/4–7 |
| XL | 56–58 cm | 22"–22 7/8" | 7–7 1/4 |
| 2XL | 58.5–60.5 cm | 23"–23 7/8" | 7 3/8–7 5/8 |
| 3XL | 61–63 cm | 24"–24 3/4" | 7 5/8–7 7/8 |
| 4XL | 63.5–66 cm | 25"–26" | 8–8 1/4 |
Designed with a relaxed comfort fit, easy on/off comfort, lower cheek and jaw pressure, relaxed long-distance wear, and compatibility with head wraps.
For a tighter fit, size down. The comfort liner will slightly break in after several rides.
This chart is a general sizing guide only. Recommended based on approximate measurments. Final fit will vary depending on head shape.
Final fit may vary depending on head shape, hairstyle, head wraps, comfort preference, and break-in period. Most helmets will slightly break in after several rides as the liner conforms to your head shape.
Real vs Fake D.O.T.
What's our secret?
Daytona Helmets has engineered the lowest profile D.O.T. approved helmet on the market—period. Designed to be as minimalistic as possible while still meeting all D.O.T. safety standards, it’s up to 60% more low profile and significantly lighter than bulky competitor models. The result is a sleek, comfortable, and stylish helmet that delivers top-tier protection without the mushroom look. Safety never looked this good.
Some helmet brands cut corners—slapping D.O.T. stickers on helmets that barely meet, or completely bypass, safety standards. These so-called helmets aren't so badass and micro, but are often just novelty lids in disguise. At Daytona Helmets, we don’t play that game. Our D.O.T. approved helmets are fully tested and certified without compromise through our In-house, 3rd party and government test centers. And if you’re looking for a true novelty helmet, we offer a dedicated selection—clearly labeled, so you always know exactly what you’re getting. Safety and honesty come first. Always.
As the direct manufacturer, Daytona Helmets cuts out the middlemen and passes the savings straight to you. While major brands mark up their helmets 8–10x, we deliver top-tier quality without the inflated price tag. You get the same—if not better—protection, comfort, and style, all at a price that’s actually fair. Premium shouldn’t mean overpriced. With Daytona Helmets, it never does. Our product is affordable, not cheap.
Ultra-Low Profile Design
Recognized as the smallest D.O.T.-approved half-shell helmet available, the Daytona Skull Cap features a sleek, contoured shell that eliminates the "mushroom" look. Its slim-line design offers a streamlined appearance without compromising safety standards.
Quick Release Strap
Equipped with a nylon Y-strap retention system featuring a sliding adjuster, the helmet provides a customizable and secure fit. The quick-release lock with a one-finger release lever allows for easy detachment, adding convenience without sacrificing safety.
Cool Comfort Liner
The helmet's interior is lined with moisture-wicking fabric, ensuring a cooler and more comfortable ride. This feature is especially appreciated by riders in warmer climates, as it helps keep the head dry and comfortable during extended use.
Customer Reviews
Overall rating: 4.8 / 5 from 22 reviews.
My husband got this for a cross country ride on his new Harley and some states are helmet required states. We live in Minnesota which is not required by law. But now i will wear it. Great fit. Comfy and its not heavy or bulky but when you wear it you feel like your noggin is protected. Iâd recommend getting this if your looking for a helmet that doesnt weigh your head down and look bulky and is stylish too. This is good one because of the lightness of it most of all. Easy to wear and not ugly on the head.
Great helmet !!! Lightweight and small and DOT !! Best helmet iâve ever worn.
Daytona makes the best half helmet on the market. I always forget I'm wearing it and I know I'm protected.
Really like the fit.
The guys at Daytona Helmets are so helpful! My first helmet (modular) I bought with a visit to their factory. This one (skull cap) was online. I had a couple of questions but they got back to me right away and the fit is fantastic.
VERY clean, nice looking, light helmet. It was a little snug at first but soon broke in and conformed nicely to my head
not sure i like the new mounting method. doesnt feel secure
Second purchase from Daytona Helmets. They are the best. Great quality products, service, and shipping packaging (They double box) Their customer service is excellent. They actually answer the phone unlike other companies I have purchased helmets from. Save yourself a lot of aggravation and do not purchase a helmet from WCL Helmets in Canada and Carbonfiberever in China. If you need to return one you will lose most of your money paid for shipping and customs. WCL never answers the phone or replies to emails either. RC
Helmet is great! Fits as advertised. I ordered the cold weather ear covers to go with it, very worth it. Great product, thanks!
Excellent customer service!!
On 4/14/18 my wifeand I were struck by a car on our 05 Road King traveling at highway speeds. Wewere both wearing your carbon fiber half helmets. Although we received seriousinjuries in the accident, your helmet kept us from sustaining nothing more thanconcussions. When we both heal and get another bike, we will be purchasing yourhelmets again! Just wanted to thank you for the great craftsmanship.
Ordered the Daytona Carbon Fiber Slim Line Half Helmet to replace my 9 year old Daytona Half Helmet of the old design. Right out of the box it was evident Daytona had made some serious improvements to the Function and Style of the Slim Line model.The new adjustable / quick release chin strap latch alone is a justifiable reason to replace your existing helmet. Using just one hand while in motion on the bike you can tighten or loosen the tension on the chin strap. A light tug on the release tab and the latch falls away effortlessly.My old Daytona Helmet always felt like it sat on top of my head. The Slim Line design sits much lower and seems to hug my head on the sides all the way around. For some reason wearing a head wrap under my old Daytona Helmet was always uncomfortable. With the Slim Line it's no problem at all.The interior liner on the Slim Line helmet has been upgraded. The chin strap material is improved (softer) and where the straps are now attached to the helmet eliminates any tendency for the helmet to want to roll back on your head.The shape and contour of the Slim Line is a big visual improvement. Viewed side by side on a table, my new Slim Line appears to be ever so slightly larger. However, put it on your head and the visual illusion is that it's much smaller. The new contoured shape and lower profile combine to produce the smaller visual.My old helmet is a Large so I ordered Large in the new Slim Line despite my head measuring 23-1/4 inches placing it in the very bottom end of an Extra Large according to the sizing chart. I had read other reviews saying a snug helmet would break-in and mine has done the same after 5-10 hours of wear.Is the Carbon Fiber worth the premium price when compared to the standard Daytona helmets? Quite frankly if you hold both helmets in your hand you cannot honestly tell a difference in the weight. Both helmets are very light. What you are paying for is the Carbon Fiber Look and added Strength of Carbon Fiber. If that's not important to you, my advice is save your money and go with the standard helmet.You can't go wrong with the Daytona Slim Line. This helmet has exceeded all my expectations.
Carbon Fiber Awesomeness I purchased the carbon fiber skull cap recieved it in a timley manner and am very pleased when I hit 60-70 mph it dosent start to lift off my head and I still get the mushroom look a little but being a Marine I have to were DOT approved and this is the best bet.
Every thing is as stated. Size chart is very helpful.
Small and light weight, quick release strap is an added bonus.
Great all around helmet. Limited mushroom look and great safety. I would recommend going up one size though.
Good helmet.
Love the helmet!
A great helmet for the price a good feeling of security
On 4/14/18 my wife and I were struck by a car on our 05 Road Kingtraveling at highway speeds. We were both wearing your carbon fiber halfhelmets. Although we received serious injuries in the accident, your helmetkept us from sustaining nothing more than concussions. When we both heal andget another bike, we will be purchasing your helmets again! Just wanted tothank you for the great craftsmanship.
Great looking Helmet. Very lightweight and the fit is perfect. Very happy with my purchase.
I have both. The fit is perfect for my head. THis is the only helmet I have owned that greatly reduced blurry vision with a windshield. Because it fits my head perfectly tight everywhere. My only suggestion... grove the foam inside and drop a couple black vents front and back. then it wont sweat so much on a warm day. If I can figure out how to do this myself I will. great helmet and great quick release. I just add a cut off black tie wrap to the release to make it easier to find with gloves on.