Sierra Designs Backcountry Bed Duo 20 Down Sleeping Bag

-6.6°C Comfort Limit, 1020g of 650 Fill Power DriDown
Weighs 2050g (excluding stuff sack)
Code: SS21650
  • £359.99
  • (FREE Delivery on orders over £15)
  • RRP £389.99
Item out of Stock | Usually dispatched within 24 hours

The Backcountry Bed Duo has a firm focus on comfort. The oversized design uses an extra wide quilt-like front that allows you both to wrap up warm or vent heat quickly depending on conditions.  

Sierra Designs says:

Sleep in the backcountry with all the comforts of home. With enough room to twist, turn over, and toss about, the Backcountry Bed Duo is our go-to double wide. Sharing the same design as the Backcountry Bed, the Duo gives you a larger comforter and individual pad sleeves for bed-like comfort, so catching some zzz’s with your favorite trail buddy is ultra-comfortable.

| Click here for more info on Sierra Designs, their history, philosophy and information on how they support their mission to get everyone 'outside'.

Sierra Design's Backcountry Bed Duo 20 Down Sleeping Bag uses some innovative and versatile features with an oversized design to give two sleepers maximum comfort. The spacious dimensions feel even bigger due to the innovative zipless front which has a wide opening with a blanket style front. This is the main feature as it allows you to wrap it tightly around your shoulders or fold it right back to dump excess heat in milder conditions. There is a small chord across the front of it that helps keep it in place but it can be removed depending on what you need. At just over 2kg this is a decent weight for a double sleeping bag with a temperature limit of -6.6°C.

The bag also features the self sealing foot vent that has been hugely popular on some of the other sleeping bags from Sierra Designs which again makes it great for keeping comfortable on warmer nights. There is a sleeping pad sleeve on the rear of the bag to help keep your mat in place and increase comfort and ease of use. The range of features combined with the oversized design mean that this isn't the lightest of bags and is more suited to car or base camp use but it is still packable enough for overnight hikes for anyone after the space and added luxury it provides.

- Reviewed by Ultralight Outdoor Gear

Help and advice: Choosing a sleeping bag advice
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  • Patent pending zipperless design provides an ultra-comfortable lightweight bag
  • Oversized integrated comforter gives all the comforts of your bed at home
  • Full-length, insulated hand/arm pockets help to seal out drafts and seal in warmth
  • Patented self-sealing foot vent provides fast and easy ventilation
  • Stretch cord closure system helps to seal out drafts
  • Sleeping pad sleeve keeps pad under you for comfort and warmth, and replaces unnecessary bottom insulation

Temperature Rating

  • Temperature Rating: 20°F / -6.6°C

Regular Specs

  • Weight: 2050g (excludes storage bags)
  • Fill Weight: 36 oz / 1020 g
  • Fits Up To: 76" / 193 cm
  • Length: 84" / 213 cm
  • Shoulder Circumference: 102" / 259 cm
  • Hip Circumference: 100" / 229 cm
  • Stuff Sack Size (L x W): 11 x 19 in / 27.9 x 48.3 cm


  • Insulation: 650FP DriDown
  • Shell Fabric: 20D Polyester Ripstop
  • Liner Fabric: 20D Polyester Taffeta
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