Rollerblade - Activa 4D (Grey/blue) - Women's: Personalize this skate for any woman with adjustable 4 Drive, 90mm wheels for boosted speed, memory fit liner for ideal comfort, versatility and performance. Closure: TFS POWER-A customized fit in 2 seconds. This revolutionary closure system is unique within the inline skate market. By pulling on the TFS disc, this quick, light, effortless system provides the closure you want with the utmost precision ensuring the skate on your foot becomes an extension of your body. Adjustable locking buckle. Shell: Power Lateral Support. Frame: 4Drive 4X90 Length 10.8" (275mm) - 11.8" (300mm)m, Max Wheel size 90mm and 165mm mount spacing; Wheels: Active 90mm/ 84A with ABEC 7; Brake: On Skate