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Item #: las0034

La Sportiva

Sideral Boots

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Regular Price: $698.95


* Discontinued styles/colors marked as 'clearance'.

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Product Information

Product Information For The La Sportiva Sideral Boots


Brand La Sportiva
Weight 2 lb 5.6 oz / 1065 g
Forward Lean 3 forward lean settings (12, 14, 16 degrees)
Binding Compatibility Tech (Dynafit)
Sole La Sportiva LazerGrip by Davos
Liner Skimo Liner with Palau thermo-moldable EVA
Sizing 25.5 - 31

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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.


  • Features Skimo Liner with Palau thermo-moldable EVA, a patented lacing system that allows for a custom fit, and built-in flex zones
  • Fast Lock System/ Vertebra Technology with Cam Closure System
  • 2 Buckle closures + optional power strap
  • Steel toe fittings are compatible with all Tech-style bindings
  • Highly durable "75 A" rubber toe and heel inserts

Reviews For The La Sportiva Sideral Boots


by PowerReviews
La SportivaSideral Boots

(based on 1 review)

Reviewed by 1 customer

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Technical marvel

By Alan

from Los Altos, CA

About Me Advanced

Verified Buyer


  • Comfortable
  • Lightweight
  • Stylish
  • Walkski Switch


    Best Uses

    • Mountaineering
    • Skiing

    Comments about Sideral Boots:

    Great engineering and materials combine to make an incredibly light boot that switches between walk and ski modes with a flip of a single buckle. In walk mode the boot/cuff interface is very flexible making for easy walking. In ski mode the boot stiffens up into one of three possible lean angles.
    The boots are true to length, though I did find the boots to be a bit narrow at the forefoot. The boot fitters indicated punching the tough material out is a bit of a challenge.
    Boot sole length (BSL) is quite short. 10mm shorter than a same size BD Prime.

    • Was this a gift?:
    • No

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    Questions & Answers

    Q & A For The La Sportiva Sideral Boots

    About La Sportiva

    Shipping Information

    U.S. Shipping Options

    Your shipping choices to the lower 48 states are as follows:


    UPS Ground: Allow 2-8 business days for delivery. No Saturday delivery. Free on orders over $50!
    UPS 3 Day Select: Guaranteed in 3 business days. No Saturday delivery.
    UPS 2nd Day: Guaranteed in 2 business days. No Saturday delivery.
    UPS Next Day: Guaranteed by end of next business day. Orders must be placed by 12:00 p.m, MST. No Saturday delivery. For AM delivery, please call us at 1-877-883-6276.

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    United States Postal Service

    Priority Mail: Allow 2-4 business days for delivery to most domestic locations.

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    International Shipping Policies

    Yes, we ship international packages everyday. Your order total must be over $50 for us to ship international.

    We also offer Free USPS Priority Mail to select countries when your order total reaches a minimum amount. more information

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