If possible, try on helmets at your local REI store to find one that is most comfortable. Please Note: during busy season economy orders can take longer to process. Expedited Orders placed before 1:00 PM CST typically ship the same day.ĭue to Covid-19 many shipping carriers are experiencing delays in specific regions of the country.ģ.Shipping Confirmation Email with a tracking number once your order ships. You will receive an Order Confirmation / Email (within 15 min of submitting the order.Ģ.In-stock orders ship in 24-48 hours. What To Expect After You Place An Orderġ. Be sure to measure the largest circumference of your head accurately. Reading mistakes of up to 2 cm are possible, which can make a huge difference. We cant stress enough the importance of accurate measurement. Getting the right lid for your skull isn’t tough you just need to measure correctly. This will save countless time and hassle from having to exchange helmets. However, when shopping online, youll want to know the size before you order. This is because there are differences in test methods, impact conditions, risk calculations, and impact weightings specific to each sport.In a perfect world, everyone could just try on helmets until they find the right one. The score values in these ratings are not comparable to score values in our helmet ratings for other sports. The overall score estimates the number of concussions the average person would see if they experienced identical impacts at rates matching their weightings while cycling.Ī lower score indicates better helmet performance. Each risk is multiplied by its weighting factor and then summed together to compute an overall score. We compute concussion risk from measured peak linear acceleration and rotational velocity for each test. Velocities were selected to reflect common cyclist head impact velocities based on helmet damage replication studies.Įach lab impact is weighted based on how often a cyclist might experience a similar impact. We test 6 locations that are dispersed around the helmet at medium and and high impact energies. We measure linear acceleration and rotational velocity for each impact, which are correlated to concussion risk. A drop tower designed to match helmet-to-ground characteristics in cycling is used to test the helmets. We rate each bike helmet based on the results of 24 impact tests in our laboratory. Our ratings are an independent and objective assessment of helmet performance for consumers, free from manufacturer influence.

Smith helmet size chart