The women’s SL Active from Scarpa is the latest generation of this classic, tough trekking boot, which can also be used with C1 walking crampons.Specifically built around the women’s TML last shape, the SL has an improved heel fit and a softer nubuck leather cuff with a cut out at the achilles for comfortable long descents in the mountains. The new speed lacing system gives a sure hold across the instep, and the leather lining inside the boot is instantly luxurious and comfortable.The SL is built using a 2.8mm Sherpa leather (the toughest and most water-resistant of any full grain leather Scarpa uses) impregnated with HS12 and build as a one-piece construction for durable weather protection. The SL also uses the Vibram Biometric trek sole for traction and support when carrying a large pack. The leather and 37.5 lining (and lack of membrane) make this a brilliant boot for warm weather trekking as well.