• SYSUM Women's Merino One Long Sleeve - Front
  • SYSUM Women's Merino One Long Sleeve - Flat Front
  • SYSUM Women's Merino One Long Sleeve - Flat Back
  • SYSUM Women's Merino One Long Sleeve - Back
  • SYSUM Women's Merino One Long Sleeve - Detail Front
  • SYSUM Women's Merino One Long Sleeve - Detail Back
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Women's Merino One Long Sleeve

£115
£115
Lightweight, soft, and breathable
More info
Please select a size In stock
Size & Fit
SYSUM Women's Merino One Long Sleeve - Detail Front
SYSUM Women's Merino One Long Sleeve - Detail Back

  • Our Women’s Merino One Long Sleeve Running Tee is versatile for warm weather or as a light thermal base layer in colder conditions. Its long sleeves offer extra coverage from the sun or warmth in cooler, windy conditions.

    Made from a 90 g/m² blend of merino wool and recycled polyester, it helps naturally regulate your body temperature. Retaining moisture in warm weather, it reduces sweating and hydration needs, while trapping heat when worn as a base layer. Naturally odour-resistant and antibacterial, this tee is perfect for multi-day adventures with minimal washing.

    Designed to reduce distractions, this women’s tee features a contoured fit for enhanced performance. Flatlock shoulder seam on the front prevents irritation under a vest pack, and angled side seams ensure a precise, comfortable fit.

    Wear with any of our Thermo Layer Tees to find your perfect temperature combination.

  • Body
    50% Merino Wool / 50% Recycled Polyester
    Stitching
    100% Recycled Polyester
    Weight
    87g / 3.06oz (Size Small)
    Production
    Made in Portugal
  • Washing Machine wash at 30°C
    Bleach Do not bleach
    Drying Do not tumble dry
    Dry clean Do not dry clean
    Iron Iron inside out on low heat
    We promote hand washing and hang drying to help reduce the amount of micro plastics getting into the oceans.
  • Fabric
    Responsibly sourced Merino wool from Sudwolle Group & GRS Certified post-consumer Recycled Polyester (Made from bottles)
    Production
    Manufactured ethically in Portugal
    Shipping
    All production items are shipped to us by land or boat
    Packaging
    Made from FSC-certified renewable wood fibers & Recycled paper materials, 100% plastic free, 100% recyclable with paper or cardboard
  • SYSUM Women's Merino One Long Sleeve - Front
    Bianca is 170cm5' 6" and wears a size S
    • Tailored fit to maximise performance
    • Select a size up if you prefer a baggy fit
    • Measurements relate to your body size
    • CM
    • IN
    • Size
    • XS
    • S
    • M
    • L
    • UK
    • 6
    • 8
    • 10
    • 12
    • US
    • 2
    • 4
    • 6
    • 8
    • Bust
    • 76
    • 30"
    • 81
    • 32"
    • 86
    • 34"
    • 91
    • 36"
    • Waist
    • 58
    • 23"
    • 63
    • 25"
    • 68
    • 27"
    • 73
    • 29"
    • Free UK standard shipping on orders over £200
    • Free & easy returns
    • Worldwide shipping
    • 14 day Returns policy

    Review our Delivery & Returns pages for more info. If you have any further questions, please contact us.

  • Thermo regulating
  • Naturally odour-resistant
  • Perfect for all-season layering
  • Distraction-free seam placement
  • Reflective back logo
  • Lightweight 87g / 3.06oz
Conditions
  • Cold
    Cold
  • Wind
    Wind
  • Wet
    Wet
  • Hot
    Hot
Temperature
  • -10ºC
    -10ºC
  • 0ºC
    0ºC
  • 10ºC
    10ºC
  • 20ºC
    20ºC
  • 30ºC
    30ºC
  • SYSUM Womens Merino One Long Sleeve - Shoulder Seam
  • SYSUM Womens Merino One Long Sleeve - Side Seam
  • SYSUM Merino One - Care Label
  • SYSUM Merino One - Reflective Light
    SYSUM Merino One - Reflective Dark
Shoulder Seam: Featuring a single front drop shoulder flatlock seam positioned to minimise irritation when wearing a vest pack.
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Side Seam: All of our tees feature a slightly angled side seam for a contoured fit and to reduce back-sag when sweating.
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No Care Label: We printed the care label directly onto the garment to prevent irritation and avoid unnecessary fabric use.
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Reflective Logo: This Merino tee features a mid-back reflective logo for visibility when running in low light. It’s positioned to stay visible when wearing a vest pack.
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SYSUM Women's Merino One Long Sleeve - Flat Front