• Marmot Mad River Down 40° Sleeping Bag
  • Marmot Mad River Down 40° Sleeping Bag
  • Marmot Mad River Down 40° Sleeping Bag
  • Marmot Mad River Down 40° Sleeping Bag
  • Marmot Mad River Down 40° Sleeping Bag
  • Marmot Mad River Down 40° Sleeping Bag
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Marmot

Marmot Mad River Down 40° Sleeping Bag

Marmot Mad River Down 40° Sleeping Bag

Purchase thru Marmot

The Marmot Mad River Down 40° Sleeping Bag is a packable mummy-style bag built for backpackers who want a reliable night's sleep on the trail. Its RDS-certified 650-fill-power duck down insulation lofts up tall while packing down small, and the chemical-free ExpeDry™ treatment helps the down dry quickly and retain loft in damp, humid conditions. The standard length fits sleepers up to 6'0", and the anatomically designed footbox with wrap-around construction gives feet room to move without sacrificing warmth.

A full-length left-side two-way zipper with an anti-snag slider and a short right-side zipper let you vent the bag or fold it down like a blanket as conditions change. The draft collar seals in warmth, an internal stash pocket keeps small essentials like a headlamp or contact lenses close at hand, and the included storage and compression sacks make it easy to cinch the bag down and head out.

Key Features

Brand Marmot
Model Number M16037
Collection Mad River
Product Type Sleeping Bag
Shape Mummy
Temperature Rating 40°F
Tested Comfort 44°F
Tested Limit 35°F
Insulation Material Duck Down
Insulation Type Duck Down
Fill Power 650
Shell Material Recycled Fabric
Lining Material Recycled Fabric
Shoulder Girth 63 in
Hip Girth 57.9 in
Footbox Size 48.8 in
Stuff Sack Size 11.8 x 6.3 in
Product Weight 1 lb 11.2 oz
Zipper Location Left Zip
Stash Pocket Yes
Product Care Machine Wash Cold, Use Liquid Detergent, Do Not Use Powdered Detergent, Gentle Cycle, Tumble Dry Low, Do Not Iron, Do Not Bleach, Do Not Dry Clean, Do Not Use Fabric Softener, Rinse Twice, Do Not Store Wet

Highlights

  • RDS-certified 650-fill-power duck down with ExpeDry™ for lofty, compressible, quick-drying warmth
  • ExpeDry™ is a permanent, chemical-free alternative to DWR (Durable Water Repellent), providing quick-drying, loft-retaining performance in wet and humid conditions
  • Gender-free design: standard length fits sleepers up to 6'0"
  • 100% recycled shell and lining fabrics
  • Full-length, left-side 2-way zipper with an anti-snag slider for improved ventilation, versatility, and easy access
  • Short right-side zipper offers fold-down comfort and additional ventilation
  • Anatomically designed footbox with wrap-around construction provides warmth and roomy comfort
  • Internal stash pocket for contact lenses, headlamp, and valuables
  • Draft collar seals in warmth and prevents heat loss, even when tossing and turning
  • ISO temperature testing adheres to reliable international standards
  • Included storage sack and compression sack

Warranty

Marmot products are warranted against defects in materials and construction for the practical lifetime of the product. The warranty does not apply to normal wear and tear, improper care, misuse, accident, neglect or the natural breakdown of materials over time.

Frequently asked questions

What is the temperature rating of the Mad River Down 40° Sleeping Bag?

It has a 40°F bag temperature rating, with a tested comfort of 44°F and a tested limit of 35°F.

What are the shoulder, hip, and footbox dimensions?

The shoulder girth is 63 in, the hip girth is 57.9 in, and the footbox measures 48.8 in.

How much does the sleeping bag weigh and what is the stuff sack size?

It weighs 1 lb 11.2 oz and the included stuff sack measures 11.8 x 6.3 in.

How should the sleeping bag be cared for?

Machine wash cold with liquid detergent on a gentle cycle, tumble dry low, and do not use powdered detergent, bleach, fabric softener, iron, or dry clean. Rinse twice and do not store wet.

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