La Sportiva Synchro

Synchro is the La Sportiva ski boot dedicated to free-ride ski mountaineering. It combines power, resistance and precision comparable to a ski boot for downhill skiing, with the lightness and mobility of a ski boot of new generation mountaineering.
The Synchro structure allows you to fully enjoy the descents on powder snow relying on the perfect transmission of power and control over the skis, accentuated by the use of safety TR2 bindings (fully compatible with this model). The lightweight Grilamid shell is flexible and resistant while the patented Vertebra Technology ™ locking system loaded carbon is part of the boot structure. The perfect transmission of power is accentuated by the Booster Dynamic Power Strap®, a highly resistance elastic strap that allows flexibility and shock/vibration absorption between the shell and the skier's leg, and the innovative hinged Double Power Tongue ™ consisting in two overlapping parts which, in ski mode, confer structural rigidity for the descent and in walk mode, facilitate the stride by increasing mobility and flex qualities. The new Buckle Pegasus Plus ™ locking system consists of 4 tough, precise buckles that allow perfect adjustment of volumes thanks to the Backbone Control micro regulation settings in a compact, functional design, created to facilitate opening / closing while containing the overall volume of the boot. Synchro: free-ride at maximum power

+ G-Shell - super compact: only 303 mm in length, size 27.5. The lightweight, Grilamid ski boot is reduced in thickness and weight without compromising the overall performance. The cuff offers freedom of movement and the innovative Rear Diffuser ensures greater stability and security of the ankle when the shell is closed in the forward position.
+ The Dual-Axis Cuff ™ consists of two synergic elements: 1) a Pebax double density hood and Climbing System Control ™ double hook which provides control of lateral stability and increases the range of motion of the ankle in the uphill phase; 2) the Vertebra Technology ™ patented locking system loaded carbon: a structural part of the boot, facilitates the transmission of downhill power thanks to the exceptional flex. The addition of an asymmetrical rear spoiler allows to fine tune the boot and the position of the foot in the shell.
+ Walking Profile: the bi-axial leg portion provides 60 ° range of motion and the configuration of the shell in line with the ISO 9

Shell:
Grilamid®
Cuff:
Pebax®
Spoiler:
Marfram
Vertreba:
Carbon Reinforced Grilamid®
Tongue:
Grilamid®
Flex:
125
Buckle Closures:
4 + Booster Dynamic Power Strap®
Range of motion:
60°
Sizes:
25 - 31½ (mondo point in half sizes)
Binding compatibility:
Tech, AT, Skitrab TR2
Outsole:
Vibram®
Weight:
1480 g (½ pair, sire 27.5)