The Boreal Men's Siula is a lightweight double boot consisting of an outer boot and a removable inner boot. The Boreal Siula is suitable for intense to extremely cold conditions, high mountain and altitude climbing and long winter alpine ascents.
The outer boot has an integral gaiter constructed from two materials. The inner portion of gaiter in extra abrasion resistant material with waterproof membrane. The outer portion of gaiter in abrasion resistant and highly breathable material with Sympatex® membrane. The shell is waterproof and reinforced one piece Teramida, with Lorica and Neoprene. Highly abrasion resistant Cordura liner with Sympatex® membrane and 6mm EVA insulation. 1.4 mm Neoprene insulating insole, with anti-slip heel lugs for precise inner boot location.
The inner boot has a removable inner bootie which is slip lasted for improved fit. The exterior of the bootie is made from Lorica and highly abrasion resistant waterproof Cordura-Sympatex® laminate. The interior is lined with waterproof breathable Boreal Dry-Line with fully Thermo-sealed seams. Triple Thinsulate® layers (no adhesives used) surround the foot, guaranteeing maximum protection with no cold spots. 1.4 mm Neoprene insole forinsulation with anti-slip heel lugs for precise inner boot location. 4 piece Neoprene Velcro-elastic closure andspecial Velcro-elastic heel fit adjustment.
Midsole: Boreal PBG-680 with lateral reinforcements for superior torsion control. Special three layer insulation system consisting of Radoma, triple layer Thinsulate? and Neoprene layers.
Sole: Vibram Teton. Rubber sole with dual density, shock absorbing EVA and PU. TPU heel and toe piece for automatic crampons.
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