• Cycling Helmet Size Guide

    All Spyder cycling helmets are made using in-mold technology where the shock absorbing, high-density polystyrene (EPS) is directly fused into the micro shell, providing greater stability, lighter weight and the ability for more ventilation openings. The helmets also feature Pro FitTM system with adjusting knobs and strap locks that can be operated with just one hand, guaranteeing acustomized fit.

    Helmets provide the best protection against injury, especially in competition. Wearing a helmet can prevent about 85% of head injuries from bike crashes. However, a helmet will only protect when it fits well. Get in the habit of wearing a helmet every time you ride.

    Choosing a Helmet

    Choose a helmet that fits safety standards. Look for a consumer product safety sticker inside the helmet. Neverwearahelmetthatiscracked, broken, or has been in a crash. Used helmets may have cracks you can not see. Older helmets may not meet current safety standards.

    Tweaking Helmet Fit

    Helmets come with fit pads to help insure a proper fit. Use the pads where there is space at the front, back and/or sides of the helmet to get a snug fit. Some models have adjustable retention strap to get an even better fit. Move pads around to touch your head evenly all the way around.

    Safety Reminders

    Bike helmets can be worn with inline roller skates. For skateboarding or snowboarding, you will need another type of helmet. Helmets are good only for one crash. Replace the helmet after a crash.

    Keep Helmet out of extreme Heat

    Helmets will be damaged if exposed to temperature exceeding 150°F. Dark vehicles and storage bags exceed this on very hot days. Heat damaged helmet will have random deformed areas where the texture appears bubbly and uneven. If damaged, helmets should be destroyed and replaced immediately.

    Important Information

    This headgear is designed to absorb the energy of a blow by partial destruction or damage. Even though such damage may not be visible, the helmet should be destroyed or replaced if it is involved in an injury-related fall. Unfortunately some accidents result in head injury that cannot be prevented by ANY helmet. Depending on the type of impact even very low speeds can result in a serious head injury or fatality. Always ride with extreme caution and be sure to read this manual thoroughly.

    1 Snell Memorial Foundation - Seattle, WA
    DOT HS 808 35 Sept 1998
    Permission to permit with credit is hereby granted
    2 The "Eyes, Ears, Mouth Test" I courtesy of the bicycle coalition of Maine, USA

    Quick-fit Check

    3-point quick and easy tests for a proper helmet fit:


    Helmets sits level on your head and rests low on the forehead, one to two finger widths above the eyebrows. You should be able to see the very edge of their helmet by looking up with your eyes only while keeping your head still. A helmet pushed up to high will not protect the face or head well in a fall or crash.


    Straps are even and form a "Y" under each earlobe. The straps are snug against the head.


    The buckled chin strap is loose enough so that you can breath. There should be enough room so you can insert the finger between the buckle and chin, but tight enough that if you open your mouth, you can feel the helmet pull down on top.

    Helmet Size Guide

    Head Circumference

    (Measure around the head in inches)
    • 20.27
    • 21.22
    • 22.75

    Helmet Size

    • Small
    • Medium
    • Large
    Retention straps and foam pads may be adjusted for a more comforable fit.