La Sportiva Sideral

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Retailers' Descriptions

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La Sportiva's Sideral Boots are the perfect all-around ski mountaineering boot that is also perfectly suited for demanding speed touring.


Speed touring, randonee racing, or just shedding some pounds on your feet, are all possible with the La Sportiva Starlet boot. The women's specific shell and cuff, with 3 forward lean positions, can predictably push skis in and out of turns. The Skimo liner, when molded, can accommodate foot irregularities, and it's featherweight, in the up-track, make this Starlet a star. Grilamid(R) shell with PA12 Polyamide/Nylon cuff Features Skimo Liner with Palau(R) thermo-moldable EVA, a patented lacing system that allows for a custom fit, and built-in flex zones teel toe fittings are compatible with all Tech-style bindings Not compatible with plate style bindings; tech bindings only Highly durable 75 A" rubber toe and heel inserts

- OMCgear

The lightweight La Sportiva Sideral Alpine Touring Boot is geared for comfort and efficiency during the ascent and hard-charging performance when you point the tips downhill. The Fast Lock System quickly switches between ski and hike modes and works with the carbon fiber exoskeleton to provide power and precision during the descent. When you're in hike mode the EZ Flex system in the tongue allows for unrestricted ankle movement, while the LazerGrip Outsole provides the grip necessary for secure travel over rock and snow.


Transition from ski- to walk-mode in one super-fast movement when you use La Sportiva's Starlet Boot for women. The exoskeleton-like Vertebra Technology is the backbone of the cuff construction offering power and precision while downhill skiing, the flex-hinge system in both the boot tongue and its thermo-moldable liner gives you freedom of movement that translates directly into comfort.

- Mountain Gear

The Sideral is the perfect all-around ski mountaineering boot for fast paced tours and demanding climbing on both ice and rock.Features:G-Shell ultra-lightweight nylon polymer Grilamid allows us to reduce the thickness of the lower shell wall to half that of other ski boot plastics without sacrificing stiffness or power.Cuff: amazing 68 degree range of motion for maximum agility on steep climbs and switchbacks and long strides on flat terrain.Fast Lock System: upper QuickBuckle set-it-and-forget-it quick release buckle system acts as an all-in-one speed closure and cuff tension regulation sytem that converts the boot quickly and easily from ski mode to walk mode for lightning fast transitions.Vertebra Technology: Carbon Reinforced Polymer (CRP) - PA12 Nylon and Carbon Fiber hardwearing ergonomic power structure that works like an exoskeleton (patent pending). It is the backbone of the cuff construction and guarantees maximum security and precision during downhill ski mode. No need for a stiff tongue, the power comes from the Vertebra when it is locked out in downhill mode.Cam Closure System: A (patent pending) quick-release lock mechanism integrated to the Vertebra Technology spine comprising a springloaded cam activated by the QuickBuckleTech Specs:Weight: 1180 g / 41.6 oz (size 27)Shell: GrilamidCuff: PA12 NylonVertebra: Carbon Reinforced Polymer - PA 12 Nylon and Carbon FiberTongue: PEBAXLiner: Palau thermo-moldable EVAPositions: 3 forward lean settings (12, 14, 16)Binding Compatibility: Tech bindings only - not AT Touring (ISO DIN 9523) compatibleSole: La Sportiva LazerGrip by Davos

- Second Ascent