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Outdoor Research X-Gaiters

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Outdoor Research was founded on the X-Gaiter. Our first ever product, inspired by a frostbite fail on Denali, was the first of its kind. Built for the most extreme weather and encapsulated by a rugged, insulated interior with an easily-adjustable, and easy-to-repair instep strap. So naturally, the 2019 version of this industry-revolutionizing classic builds off this legacy of alpine protection with a few improvements: Unprecedented warmth, streamlined fit with minimal bulk, and an incredibly lightweight construction that's versatile enough to suit your favorite seasons and mountain sports. How did we manage to pack all that in?

A 90D ripstop stretch double weave provides rugged durability against the elements that still allows for a flexible on-off design, enhanced by a stretchy and snug neoprene along the ankle and back of calf. A neoprene circumference grips the edge of your boot and stays put without slippage, and a hook-and-loop entrance allows easy manipulation - even when dexterity is compromised by large mitts. Its versatile design balances the best and worst qualities of crampons with a pliable lip that secures over your toe and heel welts, while an exterior silk screen print acts as a scuff guard to resist punctures caused by these fail-safe tools. Trusted by NASA, the compression-resistant and advanced warmth of PrimaLoft® Aerogel insulation covers toes and entire lower half of boot. Finally, an adjustable shock cord is easily manipulated and field-maintainable in the event of any emergency.

Perhaps the best quality of the newly redesigned X-Gaiter is its total versatility. Compatible with mountaineering boots, the X-Gaiter does the work - and provides the protection - of a traditional high-altitude boot without the cost, bulk, or limited use case. There's no question about it: This dramatic transformation of the best legacy footwear protection in the industry is going to be the best choice for every single one of your next alpine objectives.

Size Chart

X-Gaiters size guide


*Size up 1 full size for use with 800-meter double boots.

Measurement shown in: US
Men's5.5 – 737 - 39.57.5 – 8.540 - 41.59 – 1042 - 43.510.5 – 11.544 - 4512 – 1345.5 - 47
Women's6.5 – 837 - 39.58.5 – 9.540 - 41.510 – 1142 - 43.511.5 – 1244 - 4545.5 - 47

How to measure


Please refer to your shoe size.

Product Details
50% nylon, 43% polyester, 7% spandex, 90Dstretch woven double weave, Primaloft® Aerogel 2mm insulation, 91% polyester, 9% elastane lining, 3mm neoprene back leg

16.8 oz./477 g

Lower Gaiter Aerogel Insulated
Insulating and Stretch 3mm Neoprene
Water Resistant
Abraision Resistant Stretch Double Weave

Compatible with Mountaineering Boots
Primaloft® Aerogel Insulation Completely Covers Toes and Lower Boot
Adjustable 4mm Shockcord “X”
Hypalon Toe Cap to Prevent Toe Lift Up
Neoprene Rand with Silicon Print to Seal Around Boot
Neoprene Back Panel for Snug Fit
Hook and Loop Front Closure with Hypalon Tab Reinforcement
Hood and Loop top Closure

Top Circumference:
15in (XS)
15.5in (S)
16in (M)
16.5 (L)
17in (XL)
Center Back Height:
12in (XS)
12.5in (S)
13in (M)
13.5in (L)
14in (XL)

Easy Returns

For all eligible items, we will gladly accept the return or exchange of new items within 30 days of the original shipment date of product for a full refund.

Free Shipping

Free shipping on orders over $150! We use UPS and USPS, and send tracking info as soon as your order is shipped.

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