Criterion Prime Down Sleeping Bags

Criterion Prime 850FP Down Alpine Use Sleeping Bag Range

A range of generously proportioned sleeping bags made with 850FP down and a Pertex Quantum 52g/m² shell. Designed for mountaineering, alpine hikes and cooler conditions where you want high levels of insulation without carrying lots of weight.

Prime 400

  • Weight: 905g
  • Comfort Temp: -7°C
  • Fill: 400g (850FP)
  • Fabric: Pertex Quantum 52g/m²
  • RRP: £340

Prime 550

  • Weight: 1055g
  • Comfort Temp: -12°C
  • Fill: 550g (850FP)
  • Fabric: Pertex Quantum 52g/m²
  • RRP: £385

Prime 700

  • Weight: 1210g
  • Comfort Temp: -18°C
  • Fill: 700g (850FP)
  • Fabric: Pertex Quantum 52g/m²
  • RRP: £425

Criterion Prime Range Specifications

Model Comfort Temp.
(°C)
Total Weight
(g)
Down Quality
Type
Fill Power(1)
Down Weight
(g)
Fill Volume
(cuin)(2)
Baffle Construction
Top/Base
Max. User Height
(cm)/(feet)
Width:
Shoulders
/Foot (cm)
Colour:
Outer
/Inner
Pack Size
(cm)
Criterion
Prime 400
-7 905 white goose
95:5
850
400 11333 trapezoid/boxwall 190/(6’3″) 80/52 electric blue
/crimson
15x15x30
Criterion
Prime 550
-12 1055 white goose
95:5
850
550 15583 trapezoid/boxwall 190/(6’3″) 80/52 crimson
/crimson
15x15x33
Criterion
Prime 700
-18 1210 white goose
95:5
850
700 19833 trapezoid/boxwall 190/(6’3″) 80/52 graphite
/crimson
17x17x36
Criterion Prime 400 Criterion Prime 550 Criterion Prime 700
Comfort Temperature Rating:(&#176C) -7 -12 -18
Total Weight:(gms) 905 1055 1210
Down Quality/Type/Fill Power: White Goose/ 95:5/ 850 White Goose/ 95:5/ 850 White Goose/ 95:5/ 850
Down Weight: (gms) 400 550 700
Fill Volume(1):(cm&#179) 11333 15583 19833
Construction: Top/Base: Trapezoid/Boxwall Trapezoid/Boxwall Trapezoid/Boxwall
Max. User Height:(cm/ft) 190 (6&#8216 3&#8220) 190 (6&#8216 3&#8220) 190 (6&#8216 3&#8220)
Width Shoulders/foot:(cm) 80/52 80/52 80/52
Colours: Outer/Inner: electric blue/crimson crimson/crimson graphite/crimson
Stuff Sack Size:(cm) 15 x 15 x 30 15 x 15 x 33 15 x 15 x 36

Swipe the table to the left and right to move the columns, the first column is fixed.

Construction
Top/Base:
Down Quality/
Type/
Fill Power:
Down Weight:
(gms)
Fill Volume(1):
(cm&#179)
Total Weight
(gms)
Overall Length:
(cm)
Max. User Height:
(cm)
Width Shoulders/
foot:
(cm)
Colours:
Outer/Inner:
Comfort Temperature
Rating:
(&#176C)
Stuff Sack Size:
(cm/gms)
Criterion Prime 400 Trapezoid/Boxwall White Goose
95:5
850
400 11333 905 225 190 (6&#8216 3&#8220) 80/52 Electric Blue/Crimson -7 15 x 15 x 30cm
20g
Criterion Prime 550 Trapezoid/Boxwall White Goose
95:5
850
550 15583 1055 225 190 (6&#8216 3&#8220) 80/52 Crimson/Crimson -12 15 x 15 x 33cm
20g
Criterion Prime 700 Trapezoid/Boxwall White Goose
95:5
850
700 19833 1210 225 190 (6&#8216 3&#8220) 80/52 Graphite/Crimson -18 17 x 17 x 36cm
23g

Table Footnote – Prime Range

  1. Fill Volume: is a measure of the total insulating power of a sleeping bag. It is a useful metric to be able to compare the different fill powers and fill volumes of down in a sleeping bag. As a rule of thumb the higher the fill volume the more insulation there is in the bag. However, fill volume is a guide and does not account for differential fills or baffle design, which also may affect temperature ratings.

Key Features Of The Criterion Prime Range

Trapezoid Baffle Round Icon | Criterion Down Sleeping Bags

Trapezoid Baffle Upper

The top of our Traveller bags are made using trapezoid baffles. This helps to ensure the maximum loft for the down they hold and a better night’s sleep.

rds-andDownpass

850FP Ethical Goose Down

Fillled with RDS & Downpass certified 850 fill power ethically sourced polish white goose down with a down to feather ratio of 95:5.

pertex-quantum52

Pertex Quantum 52 Shell

Pertex Quantum 52g/m² is the ideal shell the Criterion Prime range, offering a lighter weight branded rip-stop nylon fabric, which is ideal for use in mountainous terrains.

Trapezoid Baffle Round Icon | Criterion Down Sleeping Bags
rds-andDownpass
pertex-quantum52

Trapezoid Baffle Upper

The top of our Traveller bags are made using trapezoid baffles. This helps to ensure the maximum loft for the down they hold and a better night’s sleep.

850FP Ethical Goose Down

Fillled with RDS & Downpass certified 850 fill power ethically sourced polish white goose down with a down to feather ratio of 95:5.

Pertex Quantum 52 Shell

Pertex Quantum 52g/m² is the ideal shell the Criterion Prime range, offering a lighter weight branded rip-stop nylon fabric, which is ideal for use in mountainous terrains.

Other Criterion Prime Features

  • Differential Fill and Cut – More down is placed in the top of the bag rather than the base. As your body heat rises extra down in the top of the bag ensures better insulation than if all the down was split equally. The down on the base of the bag traps some body heat and combined with a good sleeping mattress acts as a barrier, preventing heat being lost to the cooler ground. In our Prime range of bags 60% of the down is in the top of the bag with 40% in the base. For example, in the Prime 400, 240g of down is in the top and 160g is in the base.
  • Trapezium Footbox – Trapezium Boxfoot – A trapezium is a four side regular shape but unlike a rectangle it only has one pair of parallel sides rather than two. Our boxfoots are wider at the base and taper to be slightly narrower at the top of the bag. This helps to suit all feet types and sleeping styles.
  • Cowl hood – A spacious hood with one-hand-operated drawcord and plenty of room to turn you head.
  • Insulated neck baffle – Two independent down-filled baffles to trap body heat, one for below the neck, the other for above. These can be closed and cinched with Velcro fasteners and an elasticated, one-hand-operated drawcord.
  • Full length YKK zip – A two-way YKK zip runs the full length of the bag. This allows venting from both the head and foot of the bag. All of our bags have a Velcro neck retainer so the bag can be closed even with the zip open.
  • Choice of zip sides – Our Traveller range is available with zips on both the left and right hand sides. Left and right handed zip models can be zipped together if required. All of our sleeping bags (with the exception of the Expedition range) can be zipped together with bags of different ranges.
  • Down-filled zip baffle – A full length down-filled zip baffle prevents cold spots and heat loss. The baffle also has a lightweight zip stiffener to reduce zip snagging.
  • Inside pocket – A functional inside pocket allows the safe storage of valuables such as a wallet or phone.
  • Hanging loops – Two hanging loops are fitted to the boxfoot of the bag which allows storage on a coat hanger or airing on a washing line.
  • Stuff Sack and Mesh Storage Sack Included – All of our sleeping bags are supplied with a size-related stuff sack for use outdoors and a breathable, mesh storage bag for use at home if needed. We also offer a range of optional roll top dry bags.
  • for use as stuff sacks.

Find out about our sleeping bag design theory and features in the Criterion Design Library.