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Black fitted beanie with visible stitched panels and a white "extremities" logo centered on the front, displayed on a plain white background.
Man wearing a black Extremities beanie, gloves and insulated jacket leans over an open map on a wooden picnic table while checking his phone, with yellow autumn trees blurred in the background.
Runner wearing a bright yellow jacket, black beanie, gloves and shorts leans forward with hands on his knees, breathing heavily while pausing on a windswept grassy hillside with rolling hills in the background.
Man mid-stride running uphill in a bright yellow windproof jacket with a black beanie, neck gaiter and gloves across windswept brown moorland under a cloudy sky.
  1. Black fitted beanie with visible stitched panels and a white "extremities" logo centered on the front, displayed on a plain white background.
  2. Man wearing a black Extremities beanie, gloves and insulated jacket leans over an open map on a wooden picnic table while checking his phone, with yellow autumn trees blurred in the background.
  3. Runner wearing a bright yellow jacket, black beanie, gloves and shorts leans forward with hands on his knees, breathing heavily while pausing on a windswept grassy hillside with rolling hills in the background.
  4. Man mid-stride running uphill in a bright yellow windproof jacket with a black beanie, neck gaiter and gloves across windswept brown moorland under a cloudy sky.

X-Therm Performance Stretch Skull Cap

£20.00

The X-Therm® Performance Stretch Skull Cap is a lightweight thermal cap. Made with Extremities X-Therm® fabric, a four-way stretch fleece fabric that is breathable but prevents any heat escaping. Quick-drying, breathable, and close fitting, it delivers warmth and comfort for all winter activities.

X-Therm
Bright orange background featuring a large bold black geometric wordmark across the right edge and a small black circle with a yellow triangular accent near the centre-left.

102 in stock

SKU: 23XTBEN Category: Brand:

X-Therm Performance Stretch Skull Cap

The X-Therm® Stretch Skull Cap provides lightweight thermal protection for cold-weather training and outdoor use. Built with Extremities X-Therm® performance fabric, it offers exceptional warmth while maintaining breathability to regulate temperature during high-output activity.

The stretch construction ensures a secure, comfortable fit that adapts to your head shape, making it ideal to wear alone or under a helmet. With low moisture absorption and quick-drying properties, the cap performs reliably even during intense sessions, keeping you warm without overheating.

Compact and packable, the X-Therm® Stretch Skull Cap is a versatile piece of kit for runners, cyclists, climbers, and winter adventurers.

Key Features

-Extremities X-Therm® performance fabric for thermal insulation

-Stretch fit adapts to head shape for secure comfort

-Quick-drying and low moisture absorption for active use

-Lightweight, breathable design prevents overheating

-Fits comfortably under helmets

-Ideal for winter sports and outdoor activities

Specifications

Weight – 26g

Material – 94% Polyester, 6% Elastane

Guarantee

New Extremities products are guaranteed to the original owner for a period of 1 year from the date of purchase.

Details

Weight 26 g
Fabric

6% Spandex, 94% Polyester
Colour

Black
Size

Universal

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Protection for Head, Hands and Feet. Built for the Wildest Weather.

For over 35 years, Extremities has specialised in thermal gloves, hats, gaiters and socks that protect against the elements. Whether you’re summiting peaks, pounding winter trails, or cycling to work, our accessories are built to keep you warm, dry and moving.

Used by world-class athletes and everyday explorers alike, Extremities gear combines proven technologies like GORE-TEX and PrimaLoft with decades of UK design expertise. Tried. Tested. Proven — from trail to town.

Camper in a blue HELM ELITE 1 tent sits at the open entrance wearing a mustard jacket and handling a small tool, surrounded by grassy tussocks with hazy mountains in the background.

Protection Where It Matters Most

Your hands, head and feet are the first to suffer in wild weather — so we design gear to protect them. With technologies like GORE-TEX, X-Dry and PrimaLoft, Extremities accessories offer proven performance from mountains to moors and morning commutes.

Shop Headwear

Designed for Movement.
Ready for Anything.

From stormy hillwalks to dark urban commutes, Extremities products are made to move with you. Lightweight, breathable and streamlined, our gloves, hats and gaiters are built for versatility — whatever your pace, terrain or destination.

Reflective & Active Gear
Two people setting up camp beside a green tent in a grassy field—one kneeling in a red jumper arranging a sleeping mat and the other in a navy hoodie holding a black-and-red sleeping bag—with a dry-stone wall and tree-covered rolling hills in autumn colours behind them.
Person lying on their back with hands behind their head beside a bright green tent on a sunlit grassy slope, with tree-lined hills and distant snow-capped mountains under a clear blue sky

Trusted by Adventurers.
Loved by Locals.

Extremities gear is tested by elite athletes and everyday explorers alike. Whether you’re training in winter, hiking on your day off, or walking the dog before work, we’ve got the kit to keep you warm, dry and moving confidently.

Shop Bestsellers

Every new Extremities product — including the — is guaranteed to the original owner for 1 year from the date of purchase.

This covers defects in materials and workmanship under normal use conditions.

To claim under guarantee, retain your proof of purchase and contact our support team. Full terms & repair details.

Delivery Costs:
Shipping costs are calculated by the website based on the items in your cart and the delivery address. Simply add items to your basket and proceed to checkout, once you have added your shipping address, the total will update to reflect any shipping costs.

Free delivery is available for purchases made via the Terra Nova webshop with a total order value of £50 or more, delivered to a standard UK postcode. Some remote UK postcodes may be excluded from this promotion. International orders (outside of the UK) and orders made by telephone are excluded from the free shipping promotion.

Shipping:
We will endeavour to ship your goods within 48 hours of receipt of your order, however, at particularly busy times of the year or during UK public holidays it may take longer. Some items are made to order and therefore will be marked on the website with an approximate lead time.

Once your item has been despatched, you'll receive an email informing you of the tracking number (where applicable).

Read more on our Delivery & Returns Page

Pro Price — Just for You

As a valued Outdoor Professional, you’re part of a select community who put Terra Nova, Wild Country, and Extremities products to the test in the most demanding environments. Your work inspires our designs, and this programme is our way of saying thank you.

Your exclusive benefits:

  • 30% off full-price RRP across all three brands
  • Even bigger savings on selected products up to 50% off

Always the best price:
Whether it’s your Pro Price or a seasonal sale, you’ll always pay the lowest price available. If a sale price is lower than your Pro discount, the sale price is what you’ll pay — no codes, no fuss.

Why we offer it:
For over 30 years, Terra Nova has worked alongside guides, expedition leaders, mountain professionals, and outdoor educators. Your insight and experience help shape our award-winning, best-in-class gear — from Guinness World Record-breaking sub-1kg tents to the expedition-ready shelters seen on Everest. We know you rely on equipment that performs without compromise, and we’re proud to support you with professional-level access.

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Black fitted beanie with visible stitched panels and a white "extremities" logo centered on the front, displayed on a plain white background.
X-Therm Performance Stretch Skull Cap

£20.00

102 in stock