Rollerblade 2015 MACROBLADE 100 High Performance Fitness/Training Skate with 100mm Wheels Supportive female specific Macro structure coupled with a super comfortable form fitting precision vented liner The perfect mix of stability speed and performance for the serious skater Extruded twinblade aluminum 305mm frame 4x100mm/85A supreme wheels and SG9 performance bearings are durable and smooth brake in box Rollerblade high performance skates provide quality construction to meet and exceed expectations liners will pack out fit should be snug when new Rollerblade created the modern sport of inline skating back in 1980 and continues to lead the category in quality innovation sales and development