The Sidi Alba 2 Cycling shoe are a woman specific, comfortable tapered shape.SOFT INSTEP CLOUSURE SYSTEM 3The SOFT INSTEP CLOSURE SYSTEM is a wide,anatomically curved strapcombined with a soft, thermo-formed EVA padthat distributes pressure evenly over the instep area.The SOFT INSTEP CLOSURE SYSTEMis adjustable from both sides,to perfectly center the EVA pad over a high or low instep. The systemeliminates the need for the High Instep Extender.The SOFT INSTEP CLOSURE SYSTEM is replaceable.TECNO-3 SYSTEMTECNO-3 SYSTEMdials in fit along the entire length of the shoe, adapting the upper to the shape of the foot for acustomized fit. SIDI’s famously reliable and replaceable closures are improved by an all new proprietary SIDI Wire material that is completely non-binding forintuitive and effortless on-thefly adjustments.SIDI HEEL CUPReinforced cup thatstabilizes and supports the heel. Anatomically shaped plastic,reduces heel slipand provides increased power transfer. Provides additional foot protection in the event of a crash.REPLACEABLE HEEL PADFor walkability, Sidi cycling shoes include areplaceable polyurethane heel pad.SUOLA MILLENIUM 4 CARBON The MILLENNIUM 4 CARBON COMPOSITE SOLE features injected carbon fiber in a matrix of Nylon, providing more rigidity than a standard nylon sole. The MILLENNIUM 4 CARBON COMPOSITE Sole is also more durable, completely non water-absorbent and mechanically stable, meaning it’s less susceptible to changes in stiffness resulting from aging, prolonged usage, and changes in temperature or humidity. An anti-slip toe insert and replaceable polyurethane heel pad are incorporated into the MILLENNIUM 4 CARBON COMPOSITE Sole, for walkability. The MILLENNIUM 4 CARBON COMPOSITE Sole uses a standard 3-hole drilling pattern for compatibility with the best pedal systems available, and includes a printed 10 mm lateral and fore/aft cleat alignment scale on the sole for easy cleat alignment and replacement.WOMAN LASTALBA 2 in the special woman version, perfectly fits the female foot in order to perform even better for the ladies.• Tapered last mimics a women’s more tapered foot shape• Narrower across the ball of the foot• Less volume, on the instep area and a narrower heel cup