Details Scarpa SL Activ Walking Boot - Women's The SL is a really tough, 3-4 season, classic women's trekking boot. Sturdy and durable, this luxurious and comfortable walking boot provides an amazing level of instant, out of the box fit and performance. Compatible with B1 walking crampons making them suitable for mountain walking. Built on Scarpa's women's TML last shape, the SL has an improved heel fit and closer fit across the forefoot. The upper uses a soft nubuck leather cuff with a cut out at the Achilles, as well as a redesigned flex zone for greater comfort on long descents and ascents in the mountains. The speed lacing system gives a sure hold across the instep, and the plush leather lining inside the boot is instantly comfortable. The SL Activ is made with 2.8mm Sherpa leather (Scarpa's toughest and most water-resistant full grain leather) impregnated with Scarpa HS12 for excellent water resistance, and built in 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. Weight 1350 g (EU 38) TML Last has a medium volume and forefoot width, combined with slimmer heel sculpting for great foot retention. Natural rocker suited to hiking and walking models. HEEL TENSION SYSTEM offers great stability and adaptability to the severe stress derived from steep routes. ANKLE PADDING SYSTEM made of breathable memory foam allows the uppers to mould to the shape of the foot. Ergonomically designed, padded AUTOFIT COLLAR ensures maximum adaptability and comfort and reduces impact stress V-FLEX SYSTEM design allows a wider and more natural movement of the foot, in synergy with the lacing system. Flex Point System allows your ankles complete freedom of movement Speed lacing system for perfect foot wrapping B1 Crampon compatible Insole: Performance Flex Plus Last: TML Lining: Leather & Cocona Sole: Vibram Biometric Trek with dynamic TPU shank Upper: Sherpa HS12 Leather Made in Italy Specifications SL Activ Walking Boot - Women's