Product descriptionOur renowned Brainsaver rubber helmet is one of the best multi-impact helmets available. This helmet can be used as necessary protective gear for skateboarding, in-line skating ("rollerblading"), roller derby, and scooters, Propelled by gravity into the downslope of a bowl, speed picking up, eyes on your line, you don’t have to worry if disaster strikes and you hit a run ruining rock, our helmet has you covered!Sizing: Due to the nature of the Sweatsaver sizing, it is very important that you measure before ordering. See the Brainsaver Helmet Sizing chart in the images above (or the bullet list below). To ensure a perfect fit, measure the circumference of your head starting in the middle of your forehead and match it with the recommended sizes from Triple Eight.Please note that this is a skateboard helmet that is designed to fit snug yet comfortable even when sweating (since skaters don't like flopping helmets), but many feel that it is too snug at the top of each size range. If you do not want a snug/tight fit then you might be happier with the next size up. Also, if you find yourself right between sizes or near the top of a size range, then you will likely prefer stepping up to the next larger size.Small: 19.20 in - 20.8 in (49-53cm)Medium: 21.20 in - 22.40 in (54-57cm)Large: 22.80 in - 24.00 in (58-61cm)Condition: This item is new with tags. Each helmet has been personally inspected and in perfect condition with no scratches or other defects noticeable.Shipping servise:We will ship it via China Post Standard Shipping. It takes 25 days to 40 days to ship ur place.If u wanna receive the item much faster, u can choose Express, such as UPS,DHL,FedEx, etc.Feedback:1. We take care of each customer's feedback. If you received product and like it, kindly leave positive feedback with full stars for us. We will be appreciate that and offer better service in the further.2. Any disatisfied with item, kindly contact with us, we will offer our best service for you.3. We believe all the question can be solved through friendly communication.