Criterion Ultralight 350 Down Sleeping Bag

The Ultralight sleeping bag from Criterion delivers a lightweight, quality piece of kit at a fantastic price. With Pertex Quantum fabrics, 700FP down and all the features you'd expect this is a great bag for experienced gram counter and beginners alike. 

Criterion says:

The Criterion Ultralight 350 is an extremely lightweight sleeping bag, designed for minimalists, ultralight hikers and adventure racers. With a comfort temperature rating of -3°C, this is a bag for the summer. Its weight is a mere 765gms, so it will add hardly any weight to your rucksack. It is made using a Pertex Quantum (52gms/m²) ripstop shell (formerly Pertex Microlight) filled with 350g of 700 FP Polish Goose down. Trapezoid construction eliminates cold spots enabling a comfortable night's sleep.

A DWR+ treatment of the shell helps protect the down from any dampness that may occur in your tent, from condensation or wet gear. When in its stuff sack, the pack size of 12 x 12 x 27 cm which is absolutely tiny. Since it takes up hardly any room you will be able to use a smaller rucksack.

Suggested uses

The Criterion Ultralight 350 sleeping bag can be used for a diverse range of activities including ultralight hiking, 3 season trekking, micro-adventures, endurance racing/adventure racing/mountain marathons, cycle touring and travelling. The comfort temperature is -3°C, so you will not overheat during the summer, however, it will allow you to sleep outside even when the temperature dips down to freezing. The weight of 765 grams means that you can keep your pack light, which is vital when taking part in competitions.

Criterion's Ultralight 350 Down Sleeping Bag is a great option for people wanting to get out camping outside of the summer season. With 350g of 700FP down you are getting a decent level of warmth that will easily see you through the summer season and stretch into early spring and late autumn depending on the conditions. The heavier weight Pertex Quantum fabric adds durability and this kind of combination gives you a versatile bag that will work well on campsites, wild camping through to bivy trips. The DWR coating will certainly help with more adventurous outings.

The bag is impressively lightweight and packs down really well too. The fabric is much more durable than you'd normally expect on a bag of this weight. It has all the features you'd expect on a more expensive bag such as an anti-snag zipper, internal pocket and hang loops. The hood provides decent coverage and the drawcord can be used with just one hand. All-in, this bag provides great value for money.

- Reviewed by Ultralight Outdoor Gear

Help and advice:

• Full-length YKK two-way zip, with zip together compatibility (even different models)
• Cowl hood and 1 hand operated drawcord
• Anti-snagging, full length insulated zip baffle
• Inside pocket & hanging loops
• Compact fully-featured stuff sack
• Mesh storage bag

There is a Right Zip version of this sleeping bag. Please contact us to find out more and for availability of these bags here.

• Comfort temperature: -3°C
• Temperature rating confirmed by independent lab testing at Leeds University
• Weight of bag: 800g (excludes storage bags)
• Packs size: 12 x 12 x 27cm
• Length: 217cm
• Shoulders width: 75cm
• Foot width: 50cm
• Max User Height: 6' 1" (185cm)

Materials & Construction

• 350g of 92:8 Polish Goose Down insulation with 700 fill power
• Pertex Quantum Ripstop Shell – 52gms/m², with DWR treatment
• Trapezoid baffle construction