Collection

Base Layer & T-Shirts

Breathable and thermoregulating tight fit t-shirt. Soft on the skin, lightweight and fast drying. Ideal as base layer for outdoor activities like snow sports, trekking, hiking.

The Sivo Long Sleeve is knitted from 100% mulesing free merino wool, capitalising on the inherent natural properties of moisture-wicking, odour control, and body temperature regulation to ensure maximum comfort next-to-skin.

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Sivo Merino Long Sleeve Base Layer

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Breathable and thermoregulating tight fit t-shirt. Soft on the skin, lightweight and fast drying. Ideal as base layer for outdoor activities like snow sports, trekking, hiking.

Breathable and thermoregulating tight fit t-shirt. Soft on the skin, lightweight and fast drying. Ideal as base layer for outdoor activities like snow…

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A summery view of an ocean backdrop, with two men wearing Arksen LABS t-shirts and shorts, walking leisurely on the low tide sandy shore. The man to the left wears Arksen Lab's blue t-shirt and grey shorts, while the man to the right wears Arksen Lab's white t-shirt and pastel green shorts.

https://www.arksenlabs.com/en/shop/collection/base-layer/sivo-long-sleeve

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Color

Size

Sivo Long Sleeve

Grey Fog / S

Grey Fog / M

Grey Fog / L

Grey Fog / XL

Grey Fog / XXL

Flame / S

Flame / M

Flame / L

Flame / XL

Flame / XXL

Black Sand / S

Black Sand / M

Black Sand / L

Black Sand / XL

Black Sand / XXL

Jackets/ Tops - ecommerce suggestion

<ul><li dir="ltr">100% Mulesing free New Zealand Merino wool</li><li dir="ltr">Naturally Anti-bacterial/ Odour Free</li><li dir="ltr">Mesh Inserts at shoulder blades and armpit for body mapped venting.</li><li dir="ltr">Reflective logos</li><li dir="ltr">Made In Italy</li></ul>

<ul><li>Machine wash, gentle cycle.</li><li>Wash with mild detergent for wool fabric only</li><li>Wash inside out</li><li>Do not bleach.</li><li>Do not tumble-dry. Iron, low temperature. Do not dry clean. </li></ul>

Shipping
Express: £10 delivered in 2-3 working days.
Standard: Free of charge. Delivery in 5-6 working days.
Returns
We hope you’re delighted with your order. If you’re not satisfied, you may request a return for your item(s), provided the item(s) meet the return conditions: unwashed, unworn, original tags still attached, in the original packaging, within 28 days by contacting customer services.
Any shipping fees on the original order are final and will not be refunded.
<a href="https://www.arksenlabs.com/en/delivery?token=8gO1VeYemKPguZ0Ef7R944l-c3zXFXFu">Read more about our delivery policy</a>

Hassle-free cruising on Arksen 85s. Enquire about fractional ownership, offering lower costs, flexible adventure itineraries. <a href="https://www.arksen.com/en/marine/adventure-syndicate">FIND OUT MORE</a>

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HIGH PERFORMANCE APPAREL We design garments to nurture and protect humans from a changing environment, where versatility is key, ensuring every piece looks and feels incredible. Made in Europe with partners who share these values and made from the world’s most advanced performance materials, 95% of our range is produced using recycled fabrics and every piece has been engineered to maximise durability and longevity. We’ll help repair any accidental damage to extend the life of every product but more than that, we offer a lifetime warranty to give you the peace of mind that when you buy an Arksen garment it is made for life… Outerwear Mid Layer Tees & Base Layers Legwear About us Arksen apparel is the output of our forward-thinking UK based design studio, creating performance apparel engineered for adventure in a changing world. Utilising cutting-edge science, innovative fabrics, and sustainable materials, our garments are meticulously crafted to protect and enhance comfort and performance for wearers in any environment, no matter how challenging - from mountaineering expeditions to ocean voyages and everything in between. With an environmentally-conscious approach, driven by circular economy principles, our apparel range comprises a durable, versatile capsule collection made from 95% recycled fabrics, all manufactured in Europe.

HIGH PERFORMANCE APPAREL We design garments to nurture and protect humans from a changing environment, where versatility is key, ensuring every piece…

HIGH PERFORMANCE APPAREL We design garments to nurture and protect humans from a changing environment, where versatility is key, ensuring every piece looks and feels incredible. Made in Europe with partners who share these values and made from the world’s most advanced performance materials, 95% of…

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Sivo Merino Long Sleeve Base Layer

Features

Fabric Composition

Care Instructions

Delivery & Returns