The Marmot Idlewild 30° Long is the extended-length version of the standard semi-rectangular Idlewild bag, cut to fit users up to 198 cm rather than the regular size's shorter limit. It shares the same Spirafil Recycled LT synthetic insulation and manufacturer-rated -1°C figure, so expect mild three-season camping comfort rather than a lab-verified EN rating, plus the usual synthetic trade-off of extra weight and bulk versus down in exchange for reliable insulation when damp.
At 2100 g, it is heavier than the regular Idlewild 30° purely from the added length, and packs to 48 x 24 cm — car-camping sized rather than backpack-friendly. The shell is a 75x150-denier irregular ripstop polyester pongee paired with a 30-denier polyester pongee liner, favoring abrasion resistance over minimum weight. A simple drawcord hood, rather than a shaped one, keeps the design straightforward.
A two-way YKK zipper with a draft tube and a storage sack round out a bag aimed squarely at taller campers who found the regular Idlewild too short.
Specifications
Color
Blue
Limit Temperature
-1 °C
Temperature Rating Standard
Manufacturer rated
Season Rating
3-season
Total Weight
2100 g (4.63 lb)
Packed Size ( Length x Diameter )
48 x 24 (1.6 x 9.4 ft)
Insulation Type
Synthetic
Synthetic Insulation Name
Spirafil Recycled LT
Shape
Semi-rectangular
Zipper Side
Left
Zipper Length
Full length
Two-Way Zipper
✓
Shell Fabric
75D×150D Irregular Ripstop 100% Polyester Pongee
Liner Fabric
30D 100% Polyester Pongee
Draft Tube
✓
Hood Type
Simple drawcord
Internal Pocket
✓
Storage Sack Included
✓
Size Category
Long
Maximum User Height
198 cm (6.5 ft)
Recycled Materials
✓
Warmth-to-Weight Ratio f(x)
0.5 °C/kg
Weight per Degree f(x)
2100 g/°C
Bag Type
Semi-rectangular sleeping bag
Where to buy
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Category context Sleeping Bags (417 products)
Weight
Expedition weight· mainstream zone 819–1420 g· ranked 398 of 418