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ProTec Helmet Sizing

ProTec Helmet Sizing

ProTec Helmets were skateboard helmet pioneers, and their rounded, bucket-shaped skate helmet design has become ubiquitous at the skatepark and on the street. ProTec helmets are good-looking, protective, and affordable. If you've ever worn a ProTec, one thing you might have noticed is that they tend to run smaller than most other manufacturers. Before you buy any helmet, you need to measure your head and look at the sizing chart for the particular helmet you're interested in. We've created pages on how to measure your head and how to size a child's helmet if you need help measuring your head size. ProTec's sizing guide runs as follows:
  • ProTec Small Helmet 53-54cm
  • ProTec Medium Helmet 55-56cm
  • ProTec Large Helmet 57-58cm
  • ProTec XL Helmet 59-60cm
  • ProTec XXL Helmet 61-62cm

ProTec Helmets: The Liner Helps Determine the Fit

ProTec helmets come with one of three protective inner liners. (Note that the protective liner is the thick liner that is attached directly to the exterior shell, not the smaller, cushioned pads that are used for comfort and fit.) Each type of helmet has its own unique shape and each liner gives the helmet a slightly different fit.

  • ProTec skate helmets use a two-stage foam liner that is lightweight, comforable, and very cushiony. This kind of liner is designed to absorb a series of small impacts, such as you're likely to get at the skate park. They will not offer sufficent protection in a major impact, like a bicycle crash. ProTec helmets with a two-stage liner are intended as skate helmets and do NOT carry a specific safety certification (which is not unusual for skate helmets).
  • Pro-Tec bike helmets have either an expanded polystyrene (EPS) or surface-activated expanded polypropylene (SXP) liner. EPS foam liners are the industry standard for action sport helmets and bicycle helmets; however, they are not multi-impact. EPS liners offer greater impact protection than the 2-stage foam liner (meaning that your head will be better protected from a big impact, like a bike crash), however, they can "lose" their maximum protective abilities after sustaining a collision because the stiff foam lining condenses upon impact and does not pop back to its original shape. ProTec bike helmets with EPS foam liners meet Consumer Product Safety Commission (CPSC) standards for bicycle helmets. ProTec helmets with SXP liners are designed to be multi-impact helmets safe for both skateboarding and biking, This light but stiff liner is a good choice for aggressive active sports enthusiasts because it attempts to merge the benefits of ProTec’s 2-stage liner and EPS foam liner: High-impact protection that is designed to rebound after an impact without condensing permanently, potentially allowing for protection even after an impact. ProTec bike helmets with XSP liners also meet CPSC standards bicycle helmets.

Differences in How ProTec Helmets Fit

Each of these three helmet liners and styles gives the helmet a slightly different fit. If you took a size Medium ProTec Helmet in all three styles: A ProTec B2 with SXP liner, a ProTec Classic skate helmet with 2-stage liner, and ProTec Riot Street helmet with EPS liner, and tried them on, you would notice a few differences in how they fit. 
  • ProTec skate helmets (the ones with the cushy liner) tend to run smaller than ProTec bike helmets. The same person trying on size medium ProTec helmet in all three styles generally finds the skate helmet to fit very snug.
  • ProTec bike helmets (with EPS and SXP liners) felt narrower along the side of the head and bigger in the front and back
  • If you have a round head, you may find that a ProTec bike helmet with an EPS liner, like the Riot Street, is the most comfortable for you.
  • If you have a more oval-shaped head, you may find that a ProTec bike helmet with SXP liner, like the B2, is the most comfortable for you.