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Traveller Sleeping Bag & Blanket (50°F & 30°F)

The transformer: is it a sleeping bag or a blanket?

$219.00 – $339.00

Size Guide

Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. The test produces a Lower rating (for male sleepers) and a Comfort rating (for female sleepers). Both are listed in the features table on the product page.

A unisex sleeping bag with a Lower limit of 23ºF means a man should be comfortable down to air temperatures of 23ºF. The same bag will also have a Comfort limit, in the realm of 32°F, so a woman would be comfortable down to an air temperature of 32ºF. These ratings require a sleeping mat with an R-Value appropriate for expected ground temperatures – without this, the sleeping bag itself is unlikely to keep the sleeper warm enough.

A variety of factors impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag, an appropriately insulating sleeping pad and a liner as a sleep system. For example - if you plan on sleeping in nighttime air temperatures of 27ºF / -3°C, choose a bag with a gender-appropriate rating of 23°F / -5°C, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner.


This aptly named sleeping bag and down blanket is the traveler's best friend. Whether you are on a summer bike tour, or a hut trip, or couch surfing, or simply stuck at an airport or ferry terminal, the Traveller unpacks from an almost impossibly small compression sack to reveal a rectangular sleeping bag which can also unzip to form a quilt.

Two different fill weights of 750+ loft RDS-certified ULTRADRY Down™ are available: both models feature a drawcord foot box which cinches tight for warmth or opens for ventilation.

Lighter than some sleeping bag liners and just as compact, find out why the Traveller is the ideal companion on the road HERE

Can the Traveller Sleeping Bag & Blanket…?

  • Be used in cooler temperatures? Only with the addition of a thermal (Reactor) liner. The 30°F Traveller is rated for a male sleeper to 30 degrees Fahrenheit, and a Reactor would take this down to a couple of degrees below freezing. But realistically – there are much better choices for colder conditions.

  • Zip to another Traveller? Yes. All Travellers have left zippers; to couple two together simply turn one of the two inside out.

  • Be used as a sleeping bag liner? Yes. You could use the Traveller 30°F, or even the 50°F to boost the performance of a bag for cold-weather use. Adding one of these to a 20°F / -5°C bag makes more sense for most users than buying a “10°F / -15°C” bag for only occasional winter use.

Learn more about choosing the right sleeping mat to build a perfect sleep system HERE


Best Use

  • Ultralight Backpacking


  • Summer: 50°F (comfort range 50°F to 70°F)
  • 2.5 Season: 30°F (comfort range 30°F to 65°F)


  • Cut with a slight taper to save weight and maximize thermal performance.
  • Shoulder and foot drawcords
  • Full-length YKK® #3 side zipper allowing you to convert to a blanket


  • ULTRA-DRY Down 750+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
  • Baffle Construction: Traveller 50°F has sewn-through construction; 30°F has full horizontal baffles.
  • Form a double sleeping bag by using the YKK® #3 zipper to zip two Travellers to be zipped together.
  • Cut with a slight taper to save weight and maximize thermal performance.
  • Shoulder and foot drawcords
  • Includes lightweight Ultra-Sil™ compression bag and a storage cell

Technical Features

UL 15 Denier Nylon

This ultralight fabric composes the exterior and interior of the Ember quilts and the Traveller bags, and just the interior of the Spark series bags. While this fabric is light, it's quite durable and ensures easy packing and care for your bag or quilt.

750+ Loft Ultra-Dry Down™

The second highest-lofting down used in any of Sea to Summit’s sleeping bags. 750+ Fill Power indicates that one ounce (30g) of down will re-expand to over 750 cubic inches after compression. Higher loft means that less down can be used to achieve the same temperature rating – important for performance sleeping bags. The loft and down quality/composition are independently tested by the International Down and Feather Laboratory (IDFL) – a copy of the certification is supplied with every Sea to Summit sleeping bag.


The down is responsibly sourced and RDS certified and treated with the environmentally-friendly Ultra-Dry Down™ treatment.


All of which means you can rest easy.

Responsible Down Standard (RDS)

All Sea to Summit sleeping bags use only down which is certified according to the Responsible Down Standard. The RDS is helping shift the entire down and feather industry towards more humane animal rearing and handling practices. Overseen by the industry leading Textile Exchange, the RDS requires independent, third-party assessments of all aspects of animal rearing and handling throughout the entire supply chain. By using only down that meets the audited requirements of the RDS, we can have confidence that each phase of the collection process has been completed with the welfare and ethical treatment of waterfowl in mind.

To learn more about RDS, visit

Zip Coupling

Down and synthetic bags identified with our zip coupling symbol use a 65 inch #5 YKK full-length zip which allows a unisex left-handed and women's specific right-handed bag to pair together.

Designed to pair side by side, each person sleeps in their own bag enabling each of you to take advantage of your bag's unique insulation zones, hood and footbox features - perfect for cozy adventures for two.

Bags with full-length #5 YKK zips on both sides can also be coupled together with other pairing bags.

Tech Specs

Product Details

Best Use
Ultralight Backpacking
Comes With
Water-resistant Ultra-Sil™ Compression Sack and Storage Cube
Ultra-Dry Down 750+ Loft
Shell Fabric
Ultralight 15D Nylon Shell
Zip Options
Full length zipper, bag can be coupled. Drawcord foot box. Unzip fully to use as blanket.
traveller-sleeping-bag-blanket-50-f-30-f-regular.svg traveller-sleeping-bag-blanket-50-f-30-f-large.svg
Traveller 1
14.8oz / 420g
1.6 L
XXXS - 2.5L to 1L
7.1oz / 200g
6 ft / 183 cm
50º (Lower Limit)
57ºF (Comfort)
Traveller 1
1lb 1.6oz / 500g
2.4 L
XXS - 3.3L to 1.3L
8.5oz / 240g
6 ft 4 in / 192 cm
50º ( Lower Limit)
57ºF (Comfort)
Traveller 2
1lb 6.8oz / 645g
4.5 L
XS - 6L to 2L
12.3oz / 350g
6 ft / 183 cm
2.5 Season
30º (Lower Limit)
41º (Comfort)
Traveller 2
1lb 10.6oz / 755g
5.8 L
S - 10L to 3.3L
14.8oz / 420g
6 ft 4 in / 192 cm
2.5 Season
30º ( Lower Limit)
41º (Comfort Limit)
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