Stylised white mountain peak with a yellow flag on a curved white pole planted at the summit, set against a slate-blue background and framed by a dark border.

X-Therm

Maximum warmth with minimum bulk.

X-Therm is an all-season thermal fabric engineered for warmth, stretch, and breathability. The dual-layer fabric pairs a tough outer with an ultra-soft fleece lining next to the skin.

  • High warmth-to-weight ratio
  • 4-way stretch for comfort
  • Smooth outer is abrasion-resistant
Rounded rectangular product graphic for PrimaLoft Gold Insulation ECO showing a white insulation cross-section with water droplets labelled water resistant, a 55% recycled content icon, a red heat cone labelled thermally efficient, an arrow labelled compressible and the text fast drying, plus the PrimaLoft logo