Big Agnes Thunderhead SL -1°C DownTek Sleep/Bag, LH

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Size: Regular
$423.20 $529

or 4x interest-free payments of $105.80. Learn More

Free NZ shipping on orders over $75.00


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.

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
Nylon rip-stop shell fabric with a water repellent finish
Nylon Taffeta lining

Regular :  Pad Size Up to 50cm    Color Charcoal    Fill Type 650 DownTek™   Fill Weight 340 gr   Bag Weight 794 gr   Shoulder Girth 157.5 cm
                 Hip Girth 132 cm   Foot Girth 94 cm   Compressed Bag Size 14 cm x 15.2 cm

Long   :     Pad Size Up to 50cm   Color Charcoal   Fill Type 650 DownTek™   Fill Weight 397 gr  Bag Weight 879 gr   Shoulder Girth 163 cm
                 Hip Girth 137 cm   Foot Girth 99 cm   Compressed Bag Size 14 cm x 20 cm

Shipping Charges

  • $5.99 standard shipping on New Zealand orders under $75
  • Free NZ shipping on orders over $75
  • Bulky and oversized items cost $85 to the North Island and $95 to the South Island
  • $21.99 on all Australian orders
  • We cannot ship bulky and oversized items to Australia

From time-to-time, there can be delays beyond our control. We will do everything within our power to ensure your goods arrive within a reasonable time frame. If you have any queries or issues relating to your order, please don’t hesitate to contact us.

Shipping Times

We aim to process and dispatch your order as fast as possible, while in most cases this will happen within 24-72 hours, it can take up to 5 days, depending on what is ordered.

After dispatch, delivery is normally overnight within the South Island and 1-2 days within the North Island. Rural addresses could be upto an additional two days.

At this time, we do not offer urgent delivery as a standard freight option, however if you require your order urgently, please contact us before ordering to ensure that we can meet your delivery timeframe.

We aim to deliver your order within the following time-frames:

  • North Island: 3-7 work days
  • North Island rural: 3-7 work days
  • South Island: 2-6 work days
  • South Island rural: 2-6 work days
  • Australia: 7–10 work days (metropolitan areas only

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