Men's Seamless Long-Sleeved Thermal Base Layer SeamFlex CXS

Men's Seamless Long-Sleeved Thermal Base Layer SeamFlex CXS
Men's Seamless Long-Sleeved Thermal Base Layer SeamFlex CXS
Men's Seamless Long-Sleeved Thermal Base Layer SeamFlex CXS
Men's Seamless Long-Sleeved Thermal Base Layer SeamFlex CXS
Men's Seamless Long-Sleeved Thermal Base Layer SeamFlex CXS
Men's Seamless Long-Sleeved Thermal Base Layer SeamFlex CXS
CA1720031
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  • XS-S
  • M-L
  • XL-2XL
  • 3XL-4XL

 

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SUMMARY

The SeamFlex top is a long-sleeved base layer, knitted seamlessly: no ridge across the shoulders under a rucksack strap, none at the sides under a belt. Its 66% polypropylene, 30% polyamide, 4% elastane knit at 220 g/m² moves moisture outwards and dries fast. Doubled sizes, from XS/S to 3XL/4XL.

TECHNICAL DESCRIPTION

Men's Thermal Base Layer Top SeamFlex — CXS

Protection Cold
Use 1st layer
Construction Seamless
Thermal protection −10 °C / 14 °F*
Seamless knit Nothing digging in under a rucksack strap

No seams, no pressure points: you forget it after ten minutes

A base layer is judged on whether you can feel it at all. The SeamFlex is knitted in one piece, seamlessly: there is no ridge across the shoulders under a rucksack strap, none at the sides under a belt, and the flat seams of the make-up do not irritate the skin. The knit combines 66% polypropylene, which takes up almost no water and moves moisture out to the face of the fabric, 30% polyamide, which gives it tensile strength and shape retention, and 4% elastane for stretch. Long sleeves, a close fit that follows the movement.

Grand-Froid expert's view

When you spend the winter outdoors, the base layer matters more than the parka. The seamless build shows itself around the eighth hour, when an ordinary top starts to mark the shoulders. Polypropylene dries fast, which counts after any effort. Buy it close-fitting: a base layer that hangs loose carries nothing away.

Men's long-sleeved thermal base layer CXS SeamFlex, seamless knit
What is it designed for?

A base layer is chosen first for what it does with perspiration: it is what decides whether you feel cold once you stop.

  • Effort followed by standing still: site work, handling, delivery, where you sweat and then wait
  • Wearing a pack or a harness: with no shoulder seam, the pressure point under the strap is gone
  • Long days outdoors: a base layer is judged at the eighth hour, not the first
  • Travelling somewhere cold: Finland, Quebec, Iceland, moving from an overheated street to the freezing outdoors
  • Sensitive skin: flat seams and a soft knit avoid irritation in daily wear

Thermal protection

A base layer does not warm you: it stops moisture from cooling you. Polypropylene takes up very little water, which forces perspiration out to the face of the knit instead of holding it against the skin. That is what avoids wet fabric at the moment you stop — the exact moment your body stops producing heat. At the same time, a knit worn close to the body creates a still layer of air that the next layers hold in place. A base layer stops neither wind nor water, and always works under a 2nd layer.

Technical specifications
  • Seamless knit, with flat seams wherever the construction calls for them
  • 66% polypropylene, 30% polyamide, 4% elastane, 220 g/m²
  • Long sleeves, close fit
  • Moisture is carried from the skin to the face of the knit
  • The fabric helps limit odour over long wear
  • Quick drying
Composition
  • 66% polypropylene, 30% polyamide, 4% elastane, a 220 g/m² knit. Polypropylene takes up almost no water and moves moisture out to the face of the knit. Polyamide gives the knit its tensile strength and its shape retention. Elastane provides the stretch that lets the fabric follow the torso.
Size guide

Sizes are doubled: one garment covers two sizes, thanks to the stretch of the fabric. Take the one closest to your usual size. A base layer is worn close-fitting: it is the contact with the skin that lets it carry moisture away. The measurements are those of the garment laid flat, at rest and unstretched.

Measurement (cm) XS/S M/L XL/2XL 3XL/4XL
1 - Back length 66 68 70 74
2 - Chest width 36 41 46 51
3 - Neck to cuff 74.5 78.3 82 84

Measurements in cm, taken flat. Measurement 3 runs from the neckline along the sleeve to the cuff: it is not a sleeve length on its own. Tolerance ± 5%.

Care & Durability
  • Wash at 30 °C / 86 °F, on a delicate cycle
  • No bleaching, no tumble drying, no ironing, no dry cleaning
  • Wash without fabric softener: it leaves a film on the fibre and blocks the movement of moisture
  • Dries quickly in open air, so a tumble dryer serves no purpose anyway
  • Wash separately from anything with zips, which snag the knit
Return or exchange — 30 days
You have 30 days after receipt to request a return or exchange for this item.

Why choose the SeamFlex base layer top?

Because a base layer proves itself by going unnoticed, and the seamless build removes the two places where an ordinary top ends up bothering you: the shoulder under a strap, the side under a belt.

The three-layer system:

  • 1st layer — base (what this product does): against the skin. Holds body heat, moves perspiration outwards.
  • 2nd layer — mid: fleece or light down jacket. Insulates and holds warm air around the body.
  • 3rd layer — outer: parka, softshell or padded gilet. Stops the wind and keeps the heat in.

The base layer decides how comfortable the other two feel: if it holds on to moisture, nothing you put over it will make up for that.

* Indicative temperature. Perceived warmth varies with activity, body type, humidity, wind and the layers worn over the top.

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