Marmot Cwm Membrain Down Sleeping Bag

The Cwm Membrain Sleeping Bag is an expedition quality down sleeping bag designed to cope with the harshest possible conditions

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You Pre-Order is prioritised (at no additional charge); meaning that, as soon as the product arrives with us, we can wrap it straight back up and get it sent out to you - it often never even hits the stock room shelves!


With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery Dates

Estimated Delivery Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery Dates provided on product pages.

The Current Estimated Delivery Dates for Marmot Cwm Membrain Down Sleeping Bag is

Marmot Cwm Membrain Down Sleeping Bag Description

  • Brand : Marmot
  • Season :
  • Code : 20120
  • Weight : 0KG
  • The Cwm Membrain Sleeping Bag is an expedition quality down sleeping bag designed to cope with the harshest possible conditions 

    High-quality 800+ fill-power goose down and Pertex Shield® waterproof, breathable fabric form the core of this portable environment — designed to deliver restful sleep — in the harshest alpine environments. Over-engineered with sturdy reinforced linings and countless baffles for a lifetime of dependable comfort and protection.

    Marmot Cwm Membrain Down Sleeping Bag Deep Zoom

    Buyers Guide

    Sizing Information

    Technical Information

    • Filled and Finished in Rohnert Park, California
    • Certified 800+ Fill Power Goose Down
    • Pertex® Shield Waterproof/Breathable Fabric
    • Marmot Cross Baffle Construction Prevents Down Shifting and Colds Spots
    • 11-Baffle and Wrap-Around Foot Box Increases Warmth
    • Reinforced Foot Box Lining
    • Feely Draw Cords
    • Down-Filled Draft Tube
    • Ground-Level Side Seams
    • Hidden Draft Tube Pocket
    • Stretch Tricot Baffles
    • Stuff and Storage Sack Included
    • Velcro®-free Down-filled Collar
    • Velcro®-free Face Muff
    • Zipper Guards
    • Main Materials
      • Pertex Shield 30d 100% Nylon 2 Layer R/S 2.3 oz/yd
    • Lining Material
      • Pertex Microlight 30d 100% Nylon Ripstop 1.3oz/yd
    • Insulation Material
      • 800+ Fill Power Goose Down
    • Fill Weight
      • 47.23oz (1339g)
    • Bag Loft - 10
    • Bag Temperature Rating -40° C
    • Interior Length - 83in (211cm)
    • Bag Dimensions (Shoulder x Hip x Foot) - 63in (160cm) x 61in (155cm) x 45in (114.3cm)
    • Weight - 4lbs 8.89oz (2066g)

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