Skip to content
Product Care

Can I zip two Sea to Summit sleeping bags together?

Can I zip two Sea to Summit sleeping bags together?

Zipping two compatible sleeping bags together forms a warm, cozy, comfortable sleep environment for two people. This is a far more flexible option than a double sleeping bag (which explains why there are so few double sleeping bags on the market).

 

BUT not all sleeping bags can be zipped together. Here’s how you can tell which Sea to Summit bags can be coupled:

Sea to Summit sleeping bags are organized into three categories.

  • Comfort & Versatile
  • Light & Compact
  • Specialty

Comfort & Versatile Sleeping Bags:

Discontinued Right-Hand #5 Zips: Women's Trek, Women's Talus & Women's Latitude.

Our Light & Compact sleeping bags are not designed to zip together.

Light & Compact Sleeping Bags:

Flame and Spark

  • Flame Fm I and Fm II (right #3 zip)
  • Flame Fm III and Fm IV (2019 – 2022) (right #3 zip)
  • Flame Fm III and Fm IV (2022 – 2023) (right #5 zip)
  • Spark Sp I and Sp II (left # 3 zip)
  • Spark Sp III and Sp IV (left # 3 zip)
  • Spark Sp III and Sp IV (2022 – 2023) (right #5 zip)

Special Sleeping Bags:

  • Alpine: Alpine sleeping bags are intended for cold, high-altitude adventures. They are not designed to zip together.
  • Basecamp/Amplitude: Basecamp / Amplitude (Down and Synthetic) are designed to offer maximum comfort and ventilation. They have full-length zippers on both sides and a footbox zipper. Any two Basecamps / Amplitude can be zipped together. A Basecamp / Amplitude can be zipped to any of the Comfort & Versatile sleeping bags listed above.
  • Traveller: Traveller sleeping bags are designed for lightweight comfort and ventilation. Two Traveller sleeping bags of the same length can be zipped together, but a Traveller will not zip to any other Sea to Summit sleeping bag.

To help you confirm which sleeping bags will zip together please refer to the below matching guide.

Current Sleeping Bags that zip together

Model Year Zip Side/Type Zip Compatibility
Alpine 2010-2023 Left #5 None
Traveller 2016-2023 Left #3 Another Traveller of same length
Altitude 2019-2023 Right #5 Any Comfort & Versatility with left zip
Journey 2019-2023 Right #5 Any Comfort & Versatility with left zip
Venture 2019-2023 Right #5 Any Comfort & Versatility with left zip
Quest 2019-2023 Right #5 None
Ascent 2019-2023 Left #5 Any Comfort & Versatility with right zip
Trek 2019-2023 Left #5 Any Comfort & Versatility with right zip
Traverse TV 2019-2023 Left #5 Any Comfort & Versatiltiy with right zip
Trailhead 2019-2023 Left #5 None

 

Past Sleeping Bags that zip together

 Model Year Zip Side/Type Zip Compatibility 
Traverse XT 2010-2016 Left #5 Any Comfort & Versatility with right zip 
Micro 2010-2016 Left or right #3 Only 2010-2016 Micro with opposite zipper side
Trek 2010-2016 Left or right #5 Any Comfort & Versatility with opposite zip side
Talus 2012-2018 Left #5 Any Comfort & Versatility with right zip
Basecamp 2016-2018 Left or right #5 Another Basecamp or any Comfort & Versatility
Latitude 2016-2018 Left #5 Any Comfort & Versatility with right zip
Women's Trek 2016-2018 Right #5 Any Comfort & Versatility with left zip
Women's Talus 2016-2018 Right #5 Any Comfort & Versatility with left zip
Women's Latitude 2016-2018 Right #5 Any Comfort & Versatility with left zip
Micro 2016-2018 Left #5  Any Comfort & Versatility with right zip
Amplitude 2019-2022 left and right #5 Another Amplitude/Basecamp or any Comfort & Versatility

Note - in the above table, the zipper referred to is the main side zipper. Some bags also have a footbox zipper; some have a secondary short side zipper. The zipper used to couple two sleeping bag together is always the main side zipper. 

The zipper descriptions relate to Sea to Summit sleeping bags. A sleeping bag from another brand may zip together with a Sea to Summit bag provided the zipper is the same size and has the same teeth oriented in the same way facing inwards. In case of doubt when trying to couple two bags, do not force a zipper slider - damage can result to the zipper slider or zipper track.

Ask us anything

Our customer care team is here for you

Contact Us
Top Picks
$59.95
$17.95-$23.70
$34.95-$44.95
$554.95-$694.95
+1
$22.95-$44.95
$49.95-$69.95
Big River Dry Bag
5 liter || Big River Dry Bag
Big River Dry Bag
award winner
$49.95-$99.95
$7.95-$15.95
+1
$18.95-$28.95
+3
$21.95-$64.95
$34.95$25.95
$12.95