Summarised Technical Features

FOR DETAILED EXPLANATIONS PLEASE LINK TO Cumulus Sleeping Bag FEATURES

Down Quality :

• Cumulus Prime, Cumulus Expedition & Cumulus Quantum - 'diamond grade', white, super Polish goose down
• Cumulus Ultralight & Mysterious Traveller - high quality, Polish 'grey' goose down

Fabric Type - English and, new in 2007, Japanese Pertex Fabric :

• Cumulus Quantum models - Pertex Ripstop Quantum with DWR+ treatment, 34 gms/m2
• Cumulus Expedition models -
  outer shell plus critical sections of the inner (hood and feet) - Pertex Ripstop Endurance with DWR+ treatment plus a PU waterproof membrane, 52 gms/m2; main inner sections - Pertex Ripstop Microlight with DWR+ treatment, 50 gms/m2
• All other models - Pertex Ripstop Microlight with DWR+ treatment, 50 gms/m2

Note. The weights of the Mitsui Pertex fabrics, as given above, are slightly greater than for the corresponding English Pertex. The result will be an increase in the overall weight of our sleeping bags by about 30 to 35 grams once we have switched over to all-Japanese Pertex.

Colours :

• Cumulus Prime & Mysterious Traveller - coloured outer (colours - see table below); black inner
• Cumulus Expedition -
  outer shell plus critical sections of the inner (hood and feet) - black; main inner sections - graphite
  
• Cumulus Quantum - indigo outer; silver inner
• Cumulus Ultralight 350 - black outer; crimson inner (this is the new colour scheme introduced in August 2006)
• Cumulus Ultralight 200 - black outer; electric blue inner (this is the new colour scheme introduced in July 2007)
  all models - base colour is the same as the top

All models :

• full length YKK two-way zip and anti-snagging, insulated zip baffle
• choice of left or right sided zips
• zip together compatibility - can even mix different models
• one-handed drawcords, durable, metal-sprung toggles, and velcro fasteners
• cowl hood and trapezium shape box foot
• differential fill and differential cut
• inside pocket and hanging loops
• small fully-featured stuff sack
• mesh storage bag

User heights - Cumulus Quantum & Ultralight, 185 cm (6'1"); others, 190 cm (6'3").
The Expedition range and all Microlight models (except Cumulus Ultralight) have insulated neck baffles. Neck baffle drawcords are elasticated.
Quantum models have neck warmers (a simplified type of neck baffle).

All of our models have been independently tested for temperature performance - please see bottom of this page.

*Footnotes - please follow the links below

*CONSTRUCTION (in all models the base construction is boxwall)
Trapezoid
Boxwall
Brick (offset, double boxwall)
Base Construction

*DOWN
Fill Power (Loft) (Fill Power is the volume in cubic inches to which 30 gms of down will expand when it lofts)
Fill Volume (Fill volume is the volume to which the TOTAL of all the down in the sleeping bag will expand when lofted. The greater the FILL VOLUME, the warmer the sleeping bag - all other things being equal.

FOR DETAILED EXPLANATIONS PLEASE LINK TO Cumulus Sleeping Bag FEATURES

*TEMPERATURE
INDEPENDENT TEST RESULTS
(to British Standard BS4745 and ISO 5087-1)

All of the Cumulus models have been independently tested for warmth by Leeds University Performance Clothing Research Group. The results for all of our models were at least as good as stated above - and were better in most cases.