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Sizing Chart

Size JS JM S M
Hat Size <6 1/4 6 3/8 - 6 1/2 6 5/8 - 6 3/4 6 7/8 - 7
Head Size Inches 19.3 - 19.7" 20.1 - 20.5" 20.9 - 21.3" 21.7 - 22.0"
Size L XL
Hat Size 7 1/8 - 7 1/4 7 3/4 - 7 1/2
Head Size Inches 22.4 - 22.8" 23.2 - 23.6"
Size S/M L/XL
Hat Size 6 5/8-7 1/8 7 1/4-7 3/4
Head Size Inches 21 5/8-22 3/4" 22 3/4-24 3/8"
Size S/M L/XL
Hat Size 7-7 1/4 7 1/4-7 3/4
Head Size Inches 21 5/8-23 1/4" 23 1/4-24 7/8"
Size Youth Unviversal
Hat Size <6 1/4-7 6 7/8-8
Head Size Inches 19 1/4-22" 22-25 1/4"
CAMP Armour
Hat Size 6 3/4-8
Head Size Inches 21.5-24.5
CAMP Armour Lady
Hat Size 6 3/4- 7 7/8
Head Size Inches 21-24"
CAMP Armour Jr
Hat Size 6 3/4-7 7/8
Head Size Inches 21-24"
CAMP Rock Star
Hat Size 6 3/8-7 1/5
Head Size Inches 20.5-23.5
CAMP Cosmic
Hat Size 6 3/4- 7 3/8
Head Size Inches 21.5-24.5
CAMP Starlight
Hat Size 6 3/8-7 3/4
Head Size Inches 20-24"
Shred Ready Fullface
Hat Size 6 1/2-7 7/8
Head Size Inches 21.5-24
Shred Ready Shaggy
Hat Size 6 7/8-7 5/8
Head Size Inches 21.75-23.75
Shred Ready TDUB
Hat Size 6 7/8-7 5/8
Head Size Inches 21.75-23.75
Shred Ready Super Scrappy
Hat Size 6 7/8-7 5/8
Head Size Inches 21.75-23.75
Shred Ready Vixen
Hat Size 6 3/8-7 1/8
Head Size Inches 20-22.25

How to measure up!:

Helmet measuring for all ages.

Measuring your helmet is important to comfort and safety. Please measure to ensure the helmet you purchase will provide the highest degree of safety and comfort it can possibly provide.

Size matters!

Helmet sizing varies, compare the measurement with our helmet sizing chart for accuracy, or feel free to call or email our knowledgeable helmet staff to help you with fitting your helmet.

Important! Please do not guess or use past helmet purchases as a guide for this purchase. Although we are happy to exchange, we hope your helmet will be a great fit the first go around!

When you have all the measurements place your order!

Take your time, when you measure accurately you will be helmet happy – your happy helmet fit is our helmet happiness!©

It is helpful to have someone measure your head circumference. For the greatest accuracy and comfort, follow these simple helmet measuring tips.

  • Sizing up your helmet!

    1. Measure the circumference of the head using a cloth or paper measuring tape, string, shoelace, ribbon, or a strip of paper

    2. Place your measuring device approximately one inch (about 2.5cm) above the eyebrows, above the ears and around the back point of the head where the results provides the largest measurement. Be sure to take the reading OVER your hair, unless you are going to cut it all off before you wear the helmet.

    3. Please take this measurement a few times to ensure accuracy.

    4. Grip the measured location with your fingers and read the number (be sure to read to at least 1/8” or ½ cm.) If you are using a string or paper, lie on the table and measure the length with a ruler. Please repeat this process until you are happy you have measured correctly. To convert inches to centimeters by multiplying your measurement by 2.54 (example 28 inches = 28 X 2.54 cm.)

    5. It can be difficult to determine if the helmet measurement is between sizes. One option is to choose the next larger size as padding can always be added to provide the perfect fit. The helmet should fit snug, but not overly tight. If you prefer a tighter fit choose a size down.*

    6. Compare measurement to our helmet sizing chart. Now you are ready to purchase your Allsportshelmet.com happy helmet!

    7. Match your inch or centimeter measurement to our helmet Sizing Chart

    Note about hair and helmet sizing: If you have a thick head of hair, or wear your hair pulled under your helmet or in a pony tail, you may want to consider ordering 1 size up from what is shown on the sizing charts...especially if you are near the top of your size range.

    Getting the right helmet size is another step towards helmet happiness!

Types of Helmets

The purpose of any helmet is to attempt to protect the head from injury. Plastic helmets achieve this through the process of mechanical energy-absorption. When selecting or sizing helmets, weight and volume are important issues not only for comfort, but can reduce the risk of injury to the head and neck. Style is a desirable factor, but should come second to functionality of helmets, sizing helmets, and appropriate structure of helmets for each specific sport.


The two types of cycling helmets most commonly used today are hard shell and soft (or micro) shell. An effective and ideally functional bike helmet would include features such as proper ventilation for body temperature regulation, lightweight construction, aerodynamic shape, minimal interference with peripheral vision, and protection against impact on road or cars. Plastic helmets for bicycling should meet the CPSC standard.

Skateboarding & Rollerblading

Though hard shell plastic helmets have become less used by cyclists, they have remained popular with skateboarders and inline skaters. Unlike typical cycling helmets, the hard shell on skateboard helmets is built to sustain multiple impacts. EPP, expanded polypropylene is one of the best materials to look for in the interior foam of the helmet. Skate helmets should meet the ASTM F1492 standard. Brands that meet this standard as well as the CPSC cycling standard for helmets include Bell Faction, Mirra, Free Agent, Kryptonics Signature, and Pro-Tec Classic.


When sizing helmets, the perfect rock climbing helmet is lightweight with the least amount of bulkiness possible in order to maximize climbing ability. Ideally, it should offer protection against debris and falling objects, like rocks and equipment, by incorporating a small lip or visor. This unique addition also shields against rain in the climbing position. Other factors to consider are headlamp compatibility and the type of suspension system. In a suspended shell, there is a gap between the webbing and the shell, often made of polystyrene. There are two other types of suspension in plastic helmets. One is the bicycle-style that fits the skull snugly, an important factor in sizing helmets. The other is a hybrid version of the first two types, which boasts the benefits of both energy absorption and distribution. A few of the most reputable brands are Black Diamond, C.A.M.P., Cassin Astral, Edelrid Ultralight, Kong Scarab, Petzl, and Simond Bumper.

Kayaking & Whitewater

The head is the place where heat exits the body. Wearing a skull cap in addition to a helmet is the way to go in cold water and potentially cold weather. This practice will warm the whole body from headaches and swimmers ear. A kayaking helmet should maintain a stiffer shell, in order to manage impact and distribute the force over a larger area. Stiff materials to be found in plastic helmets are carbon fiber, Kevlar, and polycarbonate. Amount of cushioning is an important factor not only for comfort and sizing helmets, but for protection, distribution of energy upon impact, and deceleration.


Winter helmets are constructed for a variety of snow sports. The best models of winter helmets feature the ability to withstand multiple impacts, insulation for cold weather, ear coverage, goggle compatibility, and moisture-wicking liner. Newer models often include earpad speakers that can connect to portable music devices for easy listening. There are several styles of winter helmets to choose from, such as full shell, short shell, and full face. In-mold winter helmets are light, sleek, and one-pieced. Injection-molded winter helmets are considered more durable against falls and bumps due to the design of the EPS foam being bonded to a separate shell, but offer similar protection against impact.

Is your helmet providing protection? Helmet size matters! Many helmet wearers unknowingly wear their helmets too loose or too high on their heads. Allsporthelmets.com understands the importance of a good fitting helmet.

In order to make sure your new helmet fits properly please follow these Allsporthelmets.com step by step sizing instructions. Then review our sizing chart to help determine which helmet size is appropriate according to the helmet sport you are looking for.

Also, when purchasing any helmet on line review the return policy in case the helmet does not fit or is not comfortable as you want to be sure you can exchange it with ease.

You will love your helmet with proper sizing and fit!

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