The warmest bag in the Sea to Summit Trek range of sleeping bags, the Tk3 is a bag for those with a wider frame not wanting to resort to a more restrictive mummy shaped bag. Packing down to 5L, it’ll fit neatly in the bottom of most trekking packs.
The bag incorporates highly-breathable 2D PermaShell™ fabric which will keep your down in tip top shape. The tapered rectangle design makes the Trek ideal for people with a larger frame or slickers for space. The full length side and foot zips mean you can zip it wide open and use it as a quilt, for those warm nights or if you have company. A two-dimensional hood is useful for trapping extra warmth on those colder nights.
An oversize internal pocket is big enough to keep your wallet, passport, and iGadget. The lightweight Ultra-Sil® compression bag compresses the bag down to a mere 7L. The Trek Tk1 is a bag for the trekker wanting a freer night sleep, but with the warmth to get them through a cold night in the hut.
The "Packed Size" dimensions don't seem to agree with the compressed volume of 7.5 L -- they correspond to about 12.5 L if you assume it's a cylinder. Do you know the rough dimensions when it's compressed in its stuff sack? For the "long" size please. Cheers, Tom
G'day Tom,
For consistency we go by Sea to Summits compressed size, which is measured by the standard test method for measuring the volume of sleeping bags (ATSM F1853-11).
I've just double checked the specs provided by the supplier, and it says that the Trek TkIII long it’s going to be 7.05L compressed. The dimensions of the bag compressed will probably depend on how much force you use to compress it, so it’s hard to give a black and white answer there unfortunately.
Is this sleeping bag faulty?
G'day Robert,
I've just had a chat to our warranties manager and they've said that we haven't had an issue with a damp smell for any of the Sea to Summit sleeping bags, so I'm not too sure how that could happen unless it somehow got wet in transit.
Down will have a slight odour as it's a natural product, so firstly we would suggest airing out the bag in a well-ventilated area, and if you still feel that there is a damp odour - give us a call on 1300 914 007 and we'll look into it further for you Robert.
Is the sleeping bag Trek III still comfortable to be used in the summer at 15 ° C
G’day Stijn,
The Seat to Summit Trek TkIII is the warmest in their Trek range and it has a comfort rating of -5 degrees so it is designed for Autumn/Winter weather.
I would say that if you’re cold at home on a 15° night, then chances are you’d want a bag that was on the warmer side like the TkIII. If you’re a hot sleeper you might want to consider the TkII as that has a -1 ° rating.
As far as we know there aren’t any bags that are designed to be used in Summer and Winter, but in general it’s better to be a little too warm and unzip your bag, then be too cold and not be able to do anything about it when you’re out in the elements.
This range talks about being suited for larger framed men but im wondering whether it would be suitable for someone smaller such as myself? I like the idea of a little more room but would too much heat be wasted? Id be using it in places where the temperature would never drop below -5°C. Thanks.
Under details it states the comfort rating is -1. Is it -1 or -11?
I'm deciding between the Trek 2 and 3. Trek 3 is about 200g more than Trek 2. Would that make much of a difference when hiking in terms of space and weight overall? Also, I'd like to use it for camping out in country and/or alpine areas during June and July, would the Trek 2 still be sufficient for the colder nights or will the Trek 3 be a better option if temperatures are freezing or below?
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