Sea to Summit Trek Tk I Sleeping Bag -650 Down-
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Most Helpful Positive Review Roomy for a good nights rest
Have yet to put the bag in action and will update after July trip. However, really like the extra hip and leg room over a traditional mummy I tested. Also compresses smaller than anticipated. Only negative is the difficulty of zipping the main zipper after fully opening the bag as a blanket.
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Underspec'd and overdelivers

by captain camptastic, from VA, United States Written on September 11, 2017
These bags are advertised as >650 down and the test results included with the bag showed substantially greater fill power. I'm a cold sleeper and the TKi kept me toasty on a high 30s overnight trip. Really great loft, light weight, and spacious. Great 2-3 season bag.
Pros:
  • Value
  • weight
Cons:
  • Color
Would recommend: Yes
1 of 1 found the following review helpful.
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I love my Sea to Summit Trek I

by David T., Verified Owner from TX, United States Written on July 4, 2016
This sleeping bag is manufactured well and looks good. It compresses down well with the included compression sack. It is rated to 32 degrees F which is enough for me. There is a Trek II and III if you require more warmth. The sleeping bag has a snag free full length zipper. A second zipper unzips the foot box to use the sleeping bag as a comforter/duvet. There is a compartment sewn into the top of the sleeping bag on the inside to stash personal effects such as a watch, headlamp, wallet, etc.
Would recommend: Yes
2 of 2 found the following review helpful.
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excellent sleeping bag

by Taras K., from NY, United States Written on May 25, 2015
I used it for 3 day trip in the night the temperature was 45-55 f this bag works perfect for me. True to size
Would recommend: Yes
1 of 1 found the following review helpful.
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TK1 Sleeping Bag

by Susan N., from IL, United States Written on January 3, 2015
The package arrived in perfect condition and Sea To Summit provides a compression pack, storage bag, and a laundry bag. All materials were premium as expected and the 650 down is perfect. Can't wait to use it on my next adventure!
Would recommend: Yes
1 of 1 found the following review helpful.
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Great bag for mild weather

by CVTejas, Written on August 5, 2014
I bought this bag because my 40 degree back just wasn't enough this winter as several nights dipped down into the 30-35 degree range. I camp using either a Clark Jungle Hammock or on scout camp outs in a 4 person tent with an air mattress. I'm a big guy at 6'2" and 280 pounds. Using the Long version of this bag was comfortable, but there wasn't much room to spare. On the colder nights, using
Would recommend: Yes
1 of 1 found the following review helpful.
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