Box Construction

Box Construction
Box Construction

Klättermusen’s down products use Box Construction. This keeps the down evenly distributed using internal sidewalls, instead of penetrating seams.

Most down products on the market are sewn through the outer and inner fabric with a single seam, resulting in thousands of tiny holes letting wind pass through the material and eliminating much of the insulating effect of the down.

Box Construction creates a fully windproof layer that maximizes the insulating capabilities of goose down, resulting in down garments without cold spots or wind leaks. The Box Construction is combined with 800+ Fill Power down making it possible to achieve a superior thermal efficiency at a much lower weight than using conventional construction methods.

Show selected equipment with Box Construction
Box Construction

Box Construction Showcase

Iving 2.0, red down expedition jacket with down-filled hood.
  • Burnt Russet
  • Raven

Iving 2.0

Unisex Expedition Jacket

$1 200

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Selected equipment with Box Construction

Heidrun 2.0
  • Burnt Russet
  • Raven

Heidrun 2.0

Unisex Down Shorts

$420

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Atle 2.0
  • Dove Grey
  • Blue Sapphire
  • Frost Green
  • Gold
  • Molten Lava
  • Raven

Atle 2.0

Women's Hooded Down Jacket

$590

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Liv 2.0
  • Burnt Russet
  • Raven

Liv 2.0

Unisex Down Sweater

$440

Sold Out