Tek Tents
High Peak Cascade -40° Sleeping Bag

High Peak Cascade -40° Sleeping Bag



Estimated Arrival: Between Nov 23 and Nov 26. * ETA for US orders only.

Shipping & Returns: Free Shipping. Free Returns. All The Time. Learn More.

The Cascade -40 sub zero mummy bag is an affordable cold weather, 4-Season Sleeping Bag. The overall Size is 34" wide x 86" long x 22" wide at the foot. A compression stuff sack is included FREE! Zipper: #8 Two-Way. TWO bags can be zipped together side by side. With a temperature rating of -40°, you can be assured a restful sleep outdoors even during the most frigid nights.



I recently returned from a 5 month deployment to McMurdo Station on Ross Island, Antarctica. During that time, I was privileged to have the opportunity to spend two weeks at a field camp on the West Antarctic Ice Sheet, where various groups are doing ice core drilling to research climate change. At the field camp, there are no cozy dorm rooms. In fact, there are no permanent structures whatsoever. The 40-odd people who spend their summer there do so in tents. I was issued a High Peak Cascade -40 sleeping bag to use in my tent, and I was extremely happy with how toasty it kept me despite temperatures that did, in fact, get pretty close to -40. Believe it or not, I actually hated leaving it to return to my dorm room at McMurdo. I just wanted to let you know, if you didn’t already, that your products are being used in the some of the harshest conditions on earth, and that they are more than living up to expectations. Even a little bit of comfort can mean a lot when you are living on a glacier! Thanks for making such a great product.

Jessica Hosier



  • Opened Size: 34" x 86" x 22". Compression size: 18” x 12” diameter
  • Carry Weight: 8 lbs, Filling Weight: 6lbs
  • Insulation: Invista Tactel Quallo
  • Outer: Invista Tactel Nylon /Nylon Taffeta, Liner: Polyester Taffeta
  • Sew-in Draft Tube and Chest/Thermal Collar
  • Hood With Drawstring Closure and Barrel Lock
  • #10 Two-way Zipper, Anti-snag zipper-band
  • Two Bags can Zip together!

It is important to note that Roof Top Tents are posted via freight companies. They generally are larger types of packages and are loaded on pallets.

Order Confirmation:
When your order has been placed you will receive an email. This confirms an order has been made and that the order has entered our order processing system and your Credit Card has been pre-authorized for the purchase.

Order Shipment:
Order shipment is typically with 24-48 hours of making the purchase which is when you will receive a shipping confirmation email which contains the tracking number and shipping time is typically 3-5 days.

It is important to inspect the item the moment it arrives. As most Tents are frieght they are relatively large and heavy. It is important to check it for possible damage. It is important that if any damage is noticed it is logged with the courier company when signing for delivery, photographed, and relayed back to us.

We started Tek Tents because we identified a need for a place where the latest in Tent Technology products were put on one website. A place where customers could choose the best tent that best fitted their requirements and budget. 

Being avid outdoor enthusiasts, particularly in the Overlanding world we wanted a place where the products that we would purchase ourselves would be available to other like minded folk. 

Along the way, we have built a marketplace and community of people who share our love of exploring the outdoors. We wish to be inspiring to people who want to get to those far flung places and connect with nature. 

We are driven by:

1. Dedication to customer satisfaction and customer support.... We are available most of the time to answer questions. We are only a Phone call, Chat or Email away.

2. We know people want the best price without compromising quality, that is why we Price Match. It is why we offer FREE Shipping on orders over $99, and also why most of our customers won't be burdened with having to pay tax. 

3. Our website is a platform to find the most suitable tent for your needs. It is trust- worthy enough to have earned a SSL Certificate which eliminates any risk when using your Credit Card