From bowls to half pipes, from skate parks to backyards, Pro-Tec has spent the last 4 decades listening to the needs of skaters all over the world, in order to create the best protection available, period. The Pro-Tec Classic certified draws its line of design right back to our original helmet model, but with all the latest technology that they have pioneered over the last 40 years. The Classic certified is equipped with EPS foam and is CPSC/CE certified. The protective industry jargon in that last sentence means a massive machine smashed this helmet against an anvil in a scientific setting to prove to the world it will keep your precious dome safe when you slam. Pro-Tec does the science so you don’t have to. Our job is to keep you safe; your job is to go session the park, ride the rails, and have fun. Protection for Progression! The Krown Action Tri-pack is designed to take abuse from all types of action sports including skateboarding, bmxing, and inline skating. Includes KROWN Knee Pads, Elbow Pads, and Wrist Guards. See below for sizing instructions on the wrist/elbow/knee pads. To ensure a good wrist guard fit, measure hand circumference at the knuckles and match to the sizes listed: L 9.0 – 10.0 inches. To ensure a good knee pad fit, measure the circumference of your extended knee and match to the sizes listed: L 15 - 18 inches. To ensure a good elbow pad fit, measure the circumference of your elbow with your arm outstretched and match to the sizes listed: L 10 - 12 inches.