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Sea to Summit

Trek TkII Sleeping Bag (-8°)

From $299.90
4.8 10
or make 3 easy payments of $99.97
Free delivery to most of Australia!
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Easy 60 day returns

The Sea to Summit Trek Tk2 is designed for those that don’t like to be embraced by their sleeping bag in the way that a mummy shaped bag does. At just over 1kg and packing down to 6L and with -1⁰c in warmth, the Tk2 is the ultimate all-rounder.

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 3.3L. The Trek Tk2 is the sleeping bag for the traveller or hiker wanting a bag that will get them through most non-extremely conditions.

  • Comfort rating -1⁰c
  • 650+ loft 85/15 premium duck dow
  • Breathable 2D PermaShell™ fabric
  • Tapered rectangular design
  • Oversized internal zippered pocket
  • Lightweight Ultra-Sil® compression bag, mesh storage cell and laundry bag included
Snowys Code:
Supplier Code:
Comfort Temp. Rating:
-1 °C
Lower Temp. Limit:
-8 °C
Compressed Volume:
6 L
Max. User Height:
170 cm
Internal Girth:
148 cm Chest |146 cm Hip |98 cm Foot
External Dimensions:
170L x 74W x 5H cm
Packed Dimensions:
30.5L x 16.5W x 16H cm
33D Nylon with DWR 342T
Fill Material:
650+ Loft 85/15 Premium Duck Down
Fill Weight:
500 g
Zip Draft Tube:
Double YKK #5
40D Nylon 310T
1.005 Kg
Suggested Use:
Camping | Hiking
Limited Lifetime
4.8 10
5 stars
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1 star
Jan 08 2017

Good bag - Great quality for the price

Have slept in the bag in summer 2016 in the Vic Alps during multi-day trek at 1500m+. Happy with the bag. Compressibility is good, weight is light for the price offered, it is comfortable and the zip at the feet was appreciated in summer weather. No condensation issues.

- Mebourne
Oct 12 2016

Great Product

This bag hasn't disappointed at all. I'm a warm sleeper so wanted a bag that opened up and also wasn't too constrictive, and this works a treat. Packs down small and lofts up well. No complaints.

- Perth
Apr 28 2016

Great Buy

Just came back after doing Routeburn Track NZ. Great sleeping bag. Opens up to a very cozy blanket too.

- Cherrybrook NSW
Apr 06 2016

Great Bag

Used it a few times now, great bag packs down small and lofts up really well. Warm, comfy and enough room not to be restrictive.

Nov 20 2015

Bloody warm

Great delivery, great product.
Used it in East Gippsland for a couple of nights in a bivy tent when o'night temp was about 6C, had to unzip it an use as a doona which was perfect. Glad it had that ability. I was going to get the TkIII, glad I didn't as I'm a warm sleeper. Zips are great and the included laundry and storage bags are a bonus at a great price for a good bag.

Oct 12 2015

Excellent bag

Best thing about this bag is that it can open fully so when too warm you can use it as a blanket and let some of the heat out. You can't do that with all the bags that have 3/4 zips.

Sep 21 2015

toasty warm

it took this back on the Bib track last weekend, in my little tent without the fly on and the night breeze blowing through.
In conjunction with the Thermarest Neoair, I was so warm i didnt have the bag zipped up. Overnight lows were 5C so not freezing but definitely not warm. Im very happy so far with it.

- , Perth
Sep 17 2015

Great communications

Snowys were excellent to deal with and offered the best price i could find.
The bags are great and warm as well as compact. Im looking forward to many years use from them :)

Jul 02 2015

fantastic service

I purchased a new sleeping bag (Sea to Summit tk2 long) and was very satisfied how quickly it arrived. The bag came in full manufacturers packaging including vacuum bag which is often missing when purchasing from retail outlets to save space.
I have now used the sleeping bag a few times in near freezing conditions and was very comfortable. I enjoy the extra bag length.
The team at Snowys answered the phone very promptly and were extremely helpful. I will definitely buy from Snowys again.

Jun 13 2015

Sea to summit Bag

Excellent product that came with the added bonus of excellent customer service.

- Tighes Hill

Hello, I measure 1m60 what size would you advise me? Short or regular?1 answers

Hello, I measure 1m60 what size would you advise me? Short or regular?

- Nsw(1 month ago)

G'day Monia,

As you're 160cm tall, I'd say that the small size would be the best for you, as there will be less space in the bag, making it more efficient at keeping you warm. 

- Snowys(1 month ago)

Is this product washable?1 answers

Please advise the care instructions

- Rozelle(2 months ago)

Hi Kayla,

I've just had a look at the instructions that come with the bag, and it says that the Trek TkII is washable, however they advise that you don't dry clean or machine wash it as that may compromise the bag. 

As this bag is filled with down they recommend using an approved down cleaner, specifically the Granger's brand, and then hand washing it in a large tub. 

- Snowys(2 months ago)

Choose from 4 sizes1 answers

But how long is short, regular and long?

- Boronia(3 months ago)

Hi Baronia. These sleeping bags come in three lenghs and widths. The Short version is 170cm Long x 74cm Wide, Regular measures 183cm Long, 76cm Wide, and the Long measures 195cm Long x 81cm Wide. They all have a slightly tapered foot end and are ideal for people with a larger frame or those who prefer the snuggly feel. The bag can easily be opened out fully to be used as a quilt for those warmer nights. The bag also features an internal pocket to keep your wallet or gadgets.

- Snowys(3 months ago)

Which sleeping bag1 answers

Have just spent last nite on front lawn in my gr8 Snowys Oztrail T9 plus tent, in an Oztrail hooded Mountainview -7 sleeping bag with cotton liner, dressed with Beenie & socks & was still not quite warm enuf, especially feet! Night was crisp, here in Bunbury, maybe 5°? but seemed colder. I am 67 yrs old, 170 cms tall, & medium build & a cold sleeper. What bag would you recommend & what size? I have a light bag for higher Summer conditions. Don't like Mummy shape- these look good? Trek 2 or 3 or?

- BUNBURY, WA(7 months ago)
Hi David, I'm sorry to hear you had a bad nights sleep, there's nothing worse than when you just can't get warm enough! The Trek sleeping bags are very popular and certainly a good choice, but if you prefer a nice roomy fit consider the Sea to Summit Basecamp, these are a more generous size that the Trek. If you were too cold in your Oztrail bag with a lower limit of -7, then I think you should go for either the Trek TKIII, with a comfort rating of -5 and lower limit of -11, or the Basecamp BCIII with a comfort rating of -8 and a lower limit of -15. Remember, if you’re too hot you can always open the zip to let a bit of cool air in. I hope this helps, if you'd like to discuss this further please give us a call on 1300 914 007.
- Snowys(7 months ago)

We are trekking Kokoda in August and wonder if the TKII is sufficient?1 answers

We will have 6 hot nights, and 2 cold nights (down to zero). Will this TKII do the job? Thank you.

- HAMILTON HILL, WA(9 months ago)
G'day Emma - The Trek II will probably be more than suitable. It has a comfort rating of -1°, meaning the cold shouldn't wake you up until it drops below that temperature. This obviously varies from person to person, depending on whether you're a warm or a cold sleeper. But not by much. On the warmer nights, you can simply unzip the bag and use it like a quilt. Hope that helps. Cheers, Paul
- Snowys(9 months ago)

Do 2 bag join with left and right zippers, and is it -8° celsius?1 answers

- Dandenong(1 year ago)
That's right Ed, as long as you have a left and right zipper from the same series of bags then they will join together. Different length bags will still join, but the zip will finish short of the end on the longer bag. All temperature ratings on our site are in degrees Celsius.
- Snowys(1 year ago)

Does this sleeping bag compress well & how does it compare to the Trek II?1 answers

- Berwick(1 year ago)
Hi Ruth, Down is one of the most compressible fibers and packs down into a small compression bag (10-3.3 Litres) which measures 160 x 35.5cm. Comparing this bag, were you perhaps considering the other Trek series models? Between these models (Trek I, II & III) the basic difference is in the fill weight of down, with more fill resulting in a warmer comfort rating but this also alters the stuffed size and weight. Please also note that the lighter TkI only comes in regular and long length, not a short like the TkII & TkIII, which is an important consideration for efficiency, as a closer fit will reduce heat loss and energy wastage. Please feel free to give us a call for more detailed information.
- Snowys(1 year ago)

Does this sleeping bag have ULTRA-DRY Down?1 answers

- Queanbeyan(1 year ago)
Hi Junyan, all the Sea To Summit sleeping bags have Ultra Dry Down. The Trek series are filled with 650+ loft Ultra Dry 85/15 Premium Duck Down.
- Snowys(1 year ago)

Delivery to

Pick up from Snowys

92 Richmond Rd, Keswick SA

Opening hours:
Mon - Fri: 9am - 5.30pm
Saturday: 9am - 5pm
Sunday: 12pm - 5pm
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