-1°C

Big Agnes Thunderhead SL 30 Down Sleeping Bag

-1°C Comfort Limit, 340g of 650 Fill Power DownTek (US Method)
Weighs 794g (Regular bag)
Code: DSAW17520V
  • £229.99
  • (FREE UK & EU Delivery)
+ In Stock Now | Usually dispatched within 24 hours
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The Big Agnes Thunderhead SL 30 is a superlight technical down fill sleeping bag without zippers for gram counters and those seeking stealth mode.

Big Agnes says:

Do you hear that? It's the silence in your tent when your bag doesn't have a zipper. No more zzzzzzip sounds when you want to get in and out of your bag quietly. The Thunderhead SL bag features cozy cocoon style construction with an easy, weight-saving clip and loop system in place of the traditional zipper. With an integrated half pad sleeve on the bottom, a vaulted foot box with ample wiggle room, and vertically structured side walls that trap heat closer to your body, this 650 fill power DownTek™ bag is the perfect all-in-one sleeping bag for backpacking or any backcountry outing.

The Big Agnes Thunderhead SL 30 Down Sleeping Bag is a superlight technical down fill sleeping bag without zippers. Instead of the zipper it has a cocoon style construction feature with a clip and loops system for gram counters and those seeking stealth mode. It also features an integrated pad sleeve that allows you to easily attach your mat to the bag. The half sleeve design keeps you securely attached to the pad from the hips up while allowing freedom of movement for your legs.

Down sleeping bag insulation has long been the favourite of backpackers and mountaineers due to it's relative light weight and ability to pack down small. While down bags generally cost more and require more care to keep dry in humid conditions, the soft feel of down is unsurpassed and extremely popular. This Big Agnes sleeping bag features DownTek water repellent down insulation which repels water while maintaining it's loft and insulation value.

- Reviewed by Ultralight Outdoor Gear

Please note: This item is stored offsite and is not available for next day delivery.

Help and advice:Choosing a sleeping bag adviceEN 13537 rating for sleeping bags explainedAll about down filling in sleeping bags
Sleeping bag shape and sizes adviceSleeping Bag features Page 1Sleepin bag features page 2
  • Cocoon style construction features easy to use clip and loop system eliminating the need for a zipper
  • Oversized interior anti draft collar wraps around the entire body providing a 3D barrier against cold spots
  • Vertically structured side walls integrating diagonal baffles trap heat closer to the body
  • Vaulted foot box creates more wiggle room for your feet
  • Integrated half pad sleeve with unique design keeps you securely attached to the pad from the hips up while allowing freedom of movement for your legs, more like a traditional mummy bag
  • Superlight shell fabric with high tear strength
  • DownTek™ water repellent down repels water while maintaining insulating value
  • Low profile cordlock lets you un-cinch the hood with one hand
  • Interior fabric loops for sleeping bag liners
  • Exterior loops for hang drying or storage
  • Mesh storage sack & nylon stuff sack

Big Agnes specs

RegularLong
  • Weight: 1lb 12oz / 794g
  • Stuff sack size: 7.5in x 15in / 19 x 38cm
  • Compressed bag size: 5.5in x 6in / 14 x 15cm
  • Shoulder girth: 62in / 158cm
  • Hip girth: 52in / 132cm
  • Foot girth: 37in / 94cm
  • Fill weight: 12oz / 340g
  • Fits up to 183cm
  • Pad size needed: Any 20"/51cm wide pad
  • Works with: Mummy or rectangular pads
  • Weight: 1lb 15oz / 879g
  • Stuff sack size: 7.5in x 15in / 19 x 38cm
  • Compressed bag size: 5.5in x 8" / 14 x 20cm
  • Shoulder girth: 64in / 163cm
  • Hip girth: 54in / 137cm
  • Foot girth: 39in / 99cm
  • Fill weight: 14oz / 394g
  • Fits up to 198cm
  • Pad size needed: Any 20"/51cm wide pad
  • Works with: Mummy or rectangular pads

 Construction & Materials

  • Nylon rip-stop shell fabric with a water repellent finish
  • Nylon Taffeta lining
  • 650 fill DownTek™ water repellent down
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