SKU: 97746020711

Helium Sleeping Bag (-9°C)

Sale price$494.55 Regular price$549.50
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Ships within 48 hours · Estimated delivery Sep 1 - Sep 6

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Helium Sleeping Bag (-9°C)Refuel on your next below freezing backpacking adventure in the ultralight, eco friendly Helium 15 Sleeping Bag, featuring a new sustainable ExpeDry water repellent technology that increases performance and reduces the drying time of your down bag. With an optimal ISO tested comfort well below freezing, the Helium will keep you toasty from head to toe in a super packable 800 fill power down bag designed to easily stuff into any overnight pack. A thru

Refuel on your next below-freezing backpacking adventure in the ultralight, eco-friendly Helium 15° Sleeping Bag, featuring a new sustainable ExpeDry water-repellent technology that increases performance and reduces the drying time of your down bag. With an optimal ISO-tested comfort well below freezing, the Helium will keep you toasty from head to toe in a super-packable 800-fill-power down bag designed to easily stuff into any overnight pack. A thru-hiking favorite, the new gas bags provide lightweight warmth that's light on the Earth—perfect when you're looking to maximize miles or speed in the mountains and minimize weight and space in your pack. If going tent-less is in the plan, you can count on the quick-drying ExpeDry to perform as a bivvy sack on cold, wet, or snowy ground or ledges.

  • Ultralight and packable certified 800-fill-power goose down with eco-friendly ExpeDRY water-repellent finish that increases performance and durability with reduced drying time
  • Pertex Quantum outer fabric, designed to trap still air and improve the efficiency of insulation. A durable water-repellent (DWR) finish sheds light rain and snow to provide additional weather protection.
  • Anti-snag slider on main zipper and fold-down second zipper provide added ventilation and easy access in and out of sleeping bag
  • Anatomically designed footbox with wrap-around construction increases warmth
  • Smooth, curved baffles reduce down from shifting, increasing durability and reducing inconsistent heating inside bag
  • ISO-tested for reliable temperature and comfort rating
  • Stuff and storage sack included

Bag Temperature Celcius: -9°C
Bag Temperature Fahrenheit: 15°F
Product Care: Machine Wash Cold, Use Liquid Detergent, Gentle Cycle, Do Not Use Powdered Detergent, Tumble Dry Low, Do Not Iron, Do Not Bleach, Do Not Dry Clean, Do Not Use Fabric Softener, Rinse Twice, Do Not Store Wet
Tested Comfort: 27˚F/-3˚C
Tested Limit: 16˚F/-9˚C
Footbox Size: 99 cm
Hip Girth: 142 cm
Includes Compression Stuff Sack: NO
Includes Storage Sack: YES
Includes Stuff Sack: YES
Insulation Material: Goose Down
Insulation Type: Goose Down
Shoulder Girth: 155 cm
Stuff Sack Size: 14.2 x 7.1 in, 36 x 18 cm
Product Weight: 966 g
Zipper Location: Left Zip

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 97746020711

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4.1 ★★★★★
Based on 22 reviews
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Verified Purchase
Jare
Port Orchard, US
★★★★★ 5
A Must Have For Car Restorations!
Style: 80 mil 36 sqft, Style: 80 mil 36 sqft
I have been installing this matting in my 74 Datsun 260Z restore and very pleased with the ease of application and overall quality. My car has bedliner coating inside and this stuff sticks extremely well and is easy to trim and shape as well. I have just started installing it and using the rollers to work it in place but I can already tell a difference with just the little bit I have added....has reduced the resonance in the metal already. It's not a fast process but know it will be very rewarding once complete.
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Reviewed in the United States on May 9, 2026
R
Verified Purchase
Richard
Phoenix, US
★★★★★ 5
74 monte carlo Resto
Model: NewSLS50_52
Great product easy installation with sheets cut to size,using for Classic car Restoration,floor pan and doors
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Reviewed in the United States on May 26, 2026
R
Verified Purchase
RTD2
San Leandro, US
★★★★★ 5
Impressive Sound Deadening Solution with Enhanced Audio Quality
Model: NewSLS50_52
I recently purchased the Siless 50 mil (1.3mm) 52 sqft Car Sound Deadening mat, and I am delighted with the results it has delivered. Right from the start, I was impressed with the packaging, which ensured the product arrived in perfect condition. One of the standout features of this sound deadening mat is its ease of use. It was a breeze to cut and modify according to my specific needs. Whether I needed to cover specific areas or customize the size, the mat accommodated my requirements effortlessly. This flexibility made the installation process a breeze. The Siless Sound Deadening mat has proven to be highly effective in reducing outside noise within my vehicle. With just a half cabin install, I noticed a significant reduction of approximately 10 decibels, making my driving experience much quieter and more comfortable. The mat acted as a reliable barrier against external noise, allowing me to enjoy a more peaceful ride. Furthermore, the sound quality from my vehicle's audio system experienced a noticeable improvement. The Siless mat effectively dampened vibrations and minimized resonance, resulting in cleaner and more refined audio output. The mat's thickness of 50 mil (1.3mm) ensures optimal sound absorption, contributing to its effectiveness in creating a quieter and more enjoyable driving environment. I can now appreciate the full range of tones and enjoy a more immersive music experience during my drives. Overall, I highly recommend the Siless 50 mil Car Sound Deadening mat for anyone seeking a reliable and effective solution to reduce noise and enhance audio quality in their vehicle. The easy cutting and modifying process, along with the excellent packaging, contribute to a seamless installation experience. With a significant reduction in outside noise and an improvement in sound system performance, this sound deadening mat has exceeded my expectations.
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Reviewed in the United States on May 27, 2023
C
Verified Purchase
Charles H.
West Palm Beach, US
★★★★★ 5
Good quality sound deadener at a good price.
Model: NewSLS50_52
Quality sound deadening that adheres to body panels well. You can easily hear the vibration reduction after just the first piece by tapping on the body panel before and after.
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Reviewed in the United States on November 21, 2025
N
Verified Purchase
Nick Frazier
Phoenix, US
★★★★★ 4
Good stuff at a good price
Model: NewSLS50_52
Works well and sticks well. I used a roller and it has been over a year and everything still sticking as good as day i put it everywhere. I didnt use any adhesive but I did wipe everything down with acetone before I applied. Good stuff at a good price
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Reviewed in the United States on November 23, 2025

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