Traverse Synthetic Sleeping Bag (-4°C & -10°C)
BEST USE: Backpacking
PERFORMANCE: 2.5 Season
WEIGHT: 2lbs 7.9oz | 1130g
COMPRESSED VOLUME: 7.3 liters
Shipping & Returns
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The Traverse transitions easily into warmer weather with a full-length left-side zipper, a half-length right-side zipper, and a foot box zipper that provide unparalleled ventilation or allow the Traverse to be opened completely flat like a comforter. In colder weather, the unique WaveLoft construction allows the Thermolite insulation to expand out into air-trapping curves for maximum warmth.
Whatever the season, the wider mummy cut of the Traverse gives you room to move, no matter what position you sleep in.
Comes With70D Nylon Compression Sack
InsulationPolyester (using WaveLoft construction)
Shell FabricDurable 30D DWR Nylon shell
Zip OptionsMain side zip and foot box zip provide superior ventilation and allow the bag to be used as a comforter.
|Traverse II (-4°C) Regular
|Traverse II (-4°C) Long
|Traverse III (-10°C) Regular
|Traverse III (-10°C) Long
WaveLoft™ is a unique construction technology designed to maximize loft and minimalize insulation weight. Instead of conventional flat layers of insulation (sewn flat on top of each other) or shingle layers (sewn in diagonally overlapping layers), WaveLoft™ creates curved layers which expand out from the shell to trap the greatest amount of air possible at a lower overall weight than existing synthetic insulation constructions. WaveLoft™ is used on all Sea to Summit synthetic-insulated sleeping bags, regardless of price level.
Thermolite® HL-1 is part of the family of Thermolite® materials used in Sea to Summit sleeping bags, sleeping bag liners and sleeping mats. HL-1 high loft insulation is a fiberfill constructed with a unique 3D crimp of hollow-core and solid fibers, which provides excellent lightweight warmth with superior durability. The Thermolite insulation lofts up inside the Air Sprung Cells™ of our sleeping mats to prevent convective heat loss from your warm body to the cold ground.
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.
Our Free-Flow triple-zip design ensures your sleeping bag retains maximum warmth and efficiency when needed and multiple ventilation options when it's not. The half-zip on the right side of the bag (left side on women's bags) provides freedom of movement for both arms, additional ventilation and allows the top third of the bag to be folded down as a mini quilt when the mercury climbs higher than expected.
Frequently Asked questions
Warm enough for cool weather camping or travel?
Yes. The Thermolite® insulation with WaveLoft construction is designed to keep you warm when the temperature drops. For cold rather, we recommend the Traverse -10°C paired with a greater than 3.5 R-Value sleeping mat like the Comfort Light Insulated.
Suitable for summer temperatures?
Yes. A full-length side zipper, a second half-length zipper, and a foot box zipper can be opened for ventilation. In warm weather, unzip fully to turn the Traverse into a comforter.
Able to be zipped to another sleeping bag?
Yes. The main side zipper can be zipped to Sea to Summit Altitude, Journey or Venture sleeping bags. Regular and Long Traverse bags have the same side zipper length.