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Boreal Kangri Bi-Flex
Boreal’s Kangri Bi-Flex boot is designed for ice and technical climbing in the coldest of conditions. Built to be super-warm and rigid for climbing, it’ll still provide flexibility and movement for walking. It’s compatible with automatic crampons and has been constructed using Boreal’s Thermal Layer System for the ultimate warmth and comfort. The leather upper and Vibram Teton sole are both durable and incredibly protective, so you’ll feel secure high in the alpine, while the Bi-Flex system and three-piece velcro tongue ensure the best fit and comfort for walking or climbing alike.
|WEIGHT||2130 gr. pair. Size 41|
|UPPER||2,8 mm Split leather, Neoprene closure for thermal insulation, HFS padded heel system for a perfect fit, rubber rand for protection|
|LINING||Boreal Dry-Line® and Thinsulate®|
|MIDSOLE||Boreal PBG-680, triple layer Thinsulate® thermal protection|
|CRAMPON COMPATIBILITY||Automatic Crampons|
Vibram Teton Sole
Vibram rubber is used to make the soles of high performance climbing and mountaineering shoes because of its reputed grippiness and durability. Vibram Teton is designed for extra cold temperatures during alpine expeditions and performs expertly on snow and ice. It’s super-dense for better stability and structure, with PU and EVA foam across the sole and heel for added comfort and shock absorption. It’s also solid and durable where it counts for better crampon compatibility, and the spacious lug pattern provides superior grip.
Dry-Line is Boreal’s patented lining system, which utilises their proprietary waterproof and breathable membrane, Sympatex, that was developed in conjunction with Gore-Tex. Used in the majority of Boreal’s mountaineering boots, it’s much more than just a waterproof membrane, it’s also one of the most breathable lining systems on the market. It breathes both horizontally and vertically, and therefore ensures that your feet will be protected from moisture from the inside and the outside.
Velcro Tongue System
Boreal’s three-piece Velcro Tongue System is designed to keep the snow and bad weather out, as well as provide a super-secure fit. The tongue of the boot is split into three separate parts - a tough outer tongue that connects to the sides of the boots to block out bad weather, the middle, padded part that makes up the majority of the tongue, and a smaller tongue behind that, which can be adjusted to provide the right fit for your foot. All three pieces connect to each other with super-strong Velcro for the ultimate secure fit.
XTP is Boreal’s specially developed insole for mountaineering and expedition boots. It stands for Extreme Thermal Protection and is designed to help heat circulate throughout your foot while preventing the cold from the ground travelling up through the sole of the boot and making you cold.
Boreal’s Bi-Flex system is designed to give you the best range of movement in your ankles, but still provide support. The upper of the boot flexes both forward and backwards, as well as from side to side, giving you optimal range for tricky manoeuvres and varied terrain, but enough support for steep climbs.
TLS - Thermal Layer System
Boreal’s Thermal Layer System means that the inner and outer areas of a boot have been constructed by layering a range of materials to find the best warmth to comfort ratio. Boreals Dry-Line membrane, Sympatex, Thinsulate fabric and EVA foam and Cordura are all used in the process, although the order in which they’re used varies for mountaineering boots and expedition boots.
HFS stands for Heel Fit System and is a dense, spongy material that’s added to the back of Boreal’s mountaineering boots. It wraps around the back of the ankle to keep your heel secure and prevent heel-lift.