Aztec Long Sleeve Men’s – lightweight warmth that goes the distance. Aztec Long Sleeve is a lighter, tougher take on a classic base layer — built with a 50/50 blend of soft merino and polyester in a breathable 140gsm corespun fabric. For layering, long days, and low-maintenance living. Soft. Strong. Stays fresh. Corespun merino blend – RWS-certified wool + GRS-certified polyester. Lightweight 140gsm fabric – breathable, fast-drying and versatile. Naturally odour-resistant – wear for days without washing Layer it. Live in it. Keep going. Aztec Long Sleeve is made for changing conditions — cool mornings, shaded ascents, breezy ridgelines. It works next to skin or as a light midlayer, with merino doing the temperature-regulating, moisture-wicking, pong-resisting work, and polyester adding extra strength and stretch. The result? A long sleeve layer that’s soft enough to wear every day and tough enough to keep doing it. Whether you're backpacking for days or just staying out longer between washes, Aztec keeps you comfortable and ready to move. Lower impact. Longer wearing. Made for real life. Made from non-mulesed, RWS-certified merino and GRS-certified polyester, Aztec balances natural performance with added durability. Backed by our 3-Year Alpine Bond and built for the everyday miles.
Wash at 30°C (86°F) – Machine wash on a gentle or normal cycle at a maximum temperature of 30°C. Tumble dry on a low heat. Do not bleach – Avoid using bleach or chlorine-based products. Do not iron – Do not use an iron on this garment.
49p delivery on all orders over £30 (exc. Bulky Item Delivery)
Super Saver Delivery
£0.49
Standard Delivery
£3.99
Express Delivery
£5.99
Next Day Delivery
£6.99
24/7 InPost Locker | Shop Collect
£2.49
Evri ParcelShop
£3.99
Evri ParcelShop | Express Delivery
£5.99
Premium DPD Next Day Delivery
£7.99
Bulky Item Delivery
£4.99
Northern Ireland Super Saver Delivery
£2.99
Northern Ireland Standard Delivery
£4.99
Northern Ireland Express Delivery
£5.99
Unlimited free delivery for a year with Unlimited Delivery for £14.99
Please note, some delivery methods are not available for products delivered by our brand partners & they may have longer delivery times
Something not quite right? You have 28 days from the day you receive it, to send something back.
Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys, and swimwear or lingerie if the hygiene seal is not in place or has been broken.
Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses, and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.
Click here to view our full Returns Policy.
Alpkit
Aztec Long Sleeve Long sleeve base layer
Protect Your Purchase?
Extend your warranty and protect your purchase against accidental damage and defects.
Protects your new Aztec Long Sleeve Long sleeve base layer against breakdowns and faults once the manufacturer's warranty period is over.
Covers issues not included in your manufacturer's warranty, such as accidental damage or theft.
Get a replacement or a cash refund up to the full amount you originally paid for it.
FAQs
XCover is an authorised protection provider owned by Cover Genius, a leading insurtech firm ranked #1 in the Financial Times list of fastest-growing companies. With over 7 million customers globally and an average 4.7 out of 5 stars on Google and Trustpilot, XCover Protection is backed by some of the world's largest insurers including Lloyd's, Generali, Sompo, and Munich Re.
After purchasing XCover Protection, you'll receive a confirmation email with a link to activate your XCover Account. Your coverage starts from the day of purchase. Once activated, you can log in to view your protection documents, certificate, and coverage details at any time.
To file a claim, log in to your XCover Account, select the protection plan you'd like to claim against, and click 'Make a Claim'. You'll need to provide supporting documents relevant to your claim. XCover aims to complete 95% of claims within 3 days, with instant payment on approved claims.
Depending on your country and the type of claim, there may be a small excess or deductible applicable when making a claim. You can find the specific details in your protection wording by logging into your XCover Account.
If you wish to return your product, you'll need to submit a claim through your XCover Account. If approved, you'll receive a shipping label and have 7 days to send the item to the return partner. Once assessed and approved, you'll receive a payout reimbursing you for your item.
- Extend your return window to 35 days
- 100% protection against any shipping mishaps
Aztec Long Sleeve Men’s – lightweight warmth that goes the distance. Aztec Long Sleeve is a lighter, tougher take on a classic base layer — built with a 50/50 blend of soft merino and polyester in a breathable 140gsm corespun fabric. For layering, long days, and low-maintenance living. Soft. Strong. Stays fresh. Corespun merino blend – RWS-certified wool + GRS-certified polyester. Lightweight 140gsm fabric – breathable, fast-drying and versatile. Naturally odour-resistant – wear for days without washing Layer it. Live in it. Keep going. Aztec Long Sleeve is made for changing conditions — cool mornings, shaded ascents, breezy ridgelines. It works next to skin or as a light midlayer, with merino doing the temperature-regulating, moisture-wicking, pong-resisting work, and polyester adding extra strength and stretch. The result? A long sleeve layer that’s soft enough to wear every day and tough enough to keep doing it. Whether you're backpacking for days or just staying out longer between washes, Aztec keeps you comfortable and ready to move. Lower impact. Longer wearing. Made for real life. Made from non-mulesed, RWS-certified merino and GRS-certified polyester, Aztec balances natural performance with added durability. Backed by our 3-Year Alpine Bond and built for the everyday miles.
Wash at 30°C (86°F) – Machine wash on a gentle or normal cycle at a maximum temperature of 30°C. Tumble dry on a low heat. Do not bleach – Avoid using bleach or chlorine-based products. Do not iron – Do not use an iron on this garment.
49p delivery on all orders over £30 (exc. Bulky Item Delivery)
Super Saver Delivery
£0.49
Standard Delivery
£3.99
Express Delivery
£5.99
Next Day Delivery
£6.99
24/7 InPost Locker | Shop Collect
£2.49
Evri ParcelShop
£3.99
Evri ParcelShop | Express Delivery
£5.99
Premium DPD Next Day Delivery
£7.99
Bulky Item Delivery
£4.99
Northern Ireland Super Saver Delivery
£2.99
Northern Ireland Standard Delivery
£4.99
Northern Ireland Express Delivery
£5.99
Unlimited free delivery for a year with Unlimited Delivery for £14.99
Please note, some delivery methods are not available for products delivered by our brand partners & they may have longer delivery times
Something not quite right? You have 28 days from the day you receive it, to send something back.
Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys, and swimwear or lingerie if the hygiene seal is not in place or has been broken.
Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses, and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.
Click here to view our full Returns Policy.