Y by Nordisk Tension Mummy 300

Availabilty: In stock
Only %1 left
As low as €203.96 Regular Price €239.95
Including 21% V.A.T.
More Information
Insulation Down
Comfort temperature 0° / 10°
Weight 500 - 750g

Quick overview

The Y by Nordisk Tension Mummy 300 is a mid-weight highly insulating down bag constructed in the classic “mummy” shape that provide a roomy and comfortable nights sleep. The bag is made for any trip to the outdoors where the temperature will drop, and the lightweight outer casing fabric keeps the weight down while still providing a durable sleeping bag. The full length zipper is down covered to keep the hot air inside the bag where you can enjoy it, and the adjustable contour hood gives the bag a good feel if you sleep with your head inside it.


Mummy sleeping bag
A mummy-shaped sleeping bag offers several advantages. The close-fitting shape means there is less room for air in the sleeping bag. You'll have the air that's in there up to temperature faster, making the sleeping bag warmer than a rectangular model. Also, most mummy sleeping bags come with a hood and a collar just above the shoulders that you can tighten. These features keep the heat trapped inside the sleeping bag and protect your head and neck, where you lose the most heat. The tapered shape reduces weight and volume in your backpack, bike pannier or car trunk.

Down insulation has an excellent insulation-to-weight ratio. It is very compressible, so a bulky, warm sleeping bag, can still be reduced to a small, manageable package. Also, the weight of a down-filled sleeping bag is much lower than that of a synthetic-filled sleeping bag with a similar temperature range. The temperature range of down is greater than synthetic materials such as polyester. This means that a warm sleeping bag can be used comfortably even at higher temperatures. Finally, down has a much longer lifespan.


  • Mummy shaped construction
  • Highly breathable shell fabric
  • 90/10 European down filling
  • Two-way ankle length zipper
  • 3-seasons sleeping bag
  • H-box construction
  • Shell material: nylon
  • Lining material: nylon
  • Insulation material: Crystal Down® 90/10 600+ European Down
  • Fill Power (EU) : 600+ cuin
  • Fill Power (US) : 650+ cuin
Y by Nordisk Tension Mummy 300 M L XL
Comfort °C 6 °C 6 °C -6 °C
Limit °C 1 °C 1 °C 1 °C
Extreme °C -15 °C -15 °C -15 °C
Fill weight (grams) 270 g 300 g 315 g
Weight (grams) 695 g 780 g 820 g
Up to bodysize (cm) <175  <190 <205
Shoulder- / Footwidth (cm) 77 - 50 80 - 53 80 - 53
Pack size (cm) 28x16 28x16 28x16
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