Criterion Prime 400 Goose Down Sleeping Bag


Criterion Prime 400 – An ultralight, 905-gram Polish goose down sleeping bag with a Leeds comfort temperature rating of -7c.



Moving into winter in the UK, a sleeping bag from the Criterion Prime range is the ultimate companion. The Prime 400 is an ultralight goose down sleeping bag that offers a comfort rating (the one that matters) of -7c.

It’s filled with arguably the most efficient down in the world, Polish goose down with a fill power of 850.

And it’s not just the down that makes these Quantums have an amazing ‘comfort temperature rating to weight ratio’. Instead of sewing through like most coats, or having a box construction like most sleeping bags, they have a trapezoid construction which, although a complicated process, helps the heat stay in and the cold air out.

The neck baffle feels great when you’re cocooned within, stopping the warm air from escaping. Even the zip has an insulating baffle and the drawcord for the cowl hood and baffle is one simple cord.

Criterion bags have always had a Pertex Quantum shell, the shell on the Prime is a hardier Pertex at 52g/m². This down-proof material feels lovely to touch but is also super ultralight and hardwearing.

  • Leeds Comfort Rating: -7c
  • Weight: 905 grams
  • Fill: 450 grams of 850 fill power Diamond Grade Polish goose down (ethically sourced)
  • Inner and outer shell: Water repellent Pertex Quantum
  • Trapezoid construction
  • Full-length YKK two-way zip
  • Top/bottom down ratio: 60/40 (so there’s more down on top where you need it)
  • Maximum user height: 1.90m (6ft 2″)
  • Width at shoulders: 80cm
  • Packs to 15 x 15 x 30cm
  • Hanging loops on the bottom
  • Internal pocket
  • Comes with a stuff sack and a lofting net bag

All in all, an awesome ultralight sleeping bag that doesn’t fill your rucksack.


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Criterion Prime 400 Goose Down Sleeping Bag Cover
Criterion Prime 400 Goose Down Sleeping Bag