This boot uses our best technology, made from strong carbon fiber and new anodized mounting blocks. It also has a newer, softer, and more durable liner. This is our expensive stock boot, very rigid and lightweight. Size 10 weighs about 330 grams. We could make them lighter, but top skaters can sprint at over 50 mph, so we added an extra 40 grams of carbon and epoxy in high-stress areas. This makes this boot the fastest, strongest, and lightest inline speed skating boot you’ll ever find. Many national and world champions now wear our Rush 3.0 Boots. These boots are much better than 90% of custom boots in the market. If you want to be the best, you need to wear the Rush 3.0 Boots.