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→ 4th Dimension -20º
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4th Dimension -20º
The 4th Dimension is a cold weather, synthetic bag featuring Mountain Hardwears exclusive Quantum Expander so you can add a full 8 to the bags girth. Shingled Polarguard Delta insulation and innovative Ergo Draft Collar keep you warm down to -20ºF.
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Polarguard Delta insulation is lightweight, compressible and continues to insulate even when wet - making this bag perfect for wet climates
The Quantum Expander provides an additional 8 inches of girth - allowing for extra layering space in cold temperatures, or extra room when it is warmer
Improved shape in the hood brings the sides of the hood in close to the neck and face, reducing the need to cinch the hood tight to keep warm
The comfort foot box is shaped to allow feet to rest naturally and designed to preserve the loft - keeping your feet warmer
Shingled construction overlaps Polarguard Delta insulation sheets to maximize loft and eliminate cold spots
Polyester taffeta lining doesn’t have that "ice-cold" feeling that nylon liners have when initially slipping into the bag
Double draft tubes prevent the cold from encroaching and an ergonomic draft collar seals in heat below the shoulders
Cotton storage bag and stuff sack included
Left Hand zipper
40-denier Nylon ripstop Shell ; Polarguard Delta Insulation
3 lbs. 2 oz.
-15 degrees Fahrenheit
4 lbs. 8 oz.
Shoulder/ Hip/ Foot Girth
62/ 58/ 38 inches
6 ft. 6 ft. 6 in.
9.5 x 18 inches
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