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Fever Ultra

The ultimate lightweight sleeping bag

Due to border closures and congestion, we have temporarily disabled sales, we hope to have this live again in the New Year.
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The ultimate lightweight sleeping bag

Fever Ultra is the ultimate choice for an ultra-lightweight sleeping bag. Fever Ultra has a weight of only 280 grams and an extreme temperature of down to minus -2 Celsius. The weight is kept to an absolute minimum by using the lightest down proof fabric available, while insulation is kept at its highest using premium European goose down. A sleeping bag popular among participants in the world's toughest ultra runs.


  • Slim fit for perfect weight/performance ratio
  • Ultra-small pack size
  • Crystal Down® – Premium European down
  • Lightweight YKK zip
  • Ultralight down proof fabric (19g/m2)
  • Adjustable flat hood
  • Highly breathable fabric
Alternate Text

As main part of the Yeti logo for years, the red Y is an established symbol of exceptional quality, animal welfare and heritage of Yeti, the Down Specialist.

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Sleeping bag type : Summer


  • Comfort : 13 ℃
  • Limit : 9 ℃
  • Extreme : -2 ℃
  • Tested according to European norm EN 13537

Sleeping bag shape : Mummy

Construction : Stitched through



  • Weight excl. pack sack : 245 g
  • Length : 205 cm
  • Body length : 165 cm - 175 cm

Pack sack

  • Pack sack type : Pack sack with guy line and cord stopper closing
  • Pack size : 18 x 11 cm



Composition: 100% Nylon

Construction: Rip-stop

Colour: Copper


Composition: 100% Nylon

Construction: Rip-stop

Colour: Black