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4.8 19

Sea to Summit

Trek TkII Sleeping Bag (-8°)

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92 Richmond Rd, Keswick SA Mon - Fri: 9am - 5.30pm
Sat: 9am - 5pm
Sun: 12pm - 5pm
17 Doherty St, Brendale QLD Mon - Fri: 9am - 5.30pm
Sat: 9am - 5pm
Sun: 9.30am - 2.30pm
Sea to Summit Trek Series Sleeping Bag Watch video

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
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
Compressed Volume:
6 L
33D Nylon with DWR 342T
Fill Material:
650+ Loft 85/15 Premium Duck Down
Fill Weight:
500 g
40D Nylon 310T
Zip Draft Tube:
Double YKK #5
1.005 Kg
Suggested Use:
Camping | Hiking
Limited Lifetime

(19 reviews)
4.8 19
5 stars
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1 star
Apr 07 2017

Awesome sleeping bag

great sleeping bag very warm and packs down small, just returned from a trip in the high country very cold nights down to 2 degrees, not a problem for this bag. As always Snowys are best on value and super fast delivery.

- melbourne
Apr 03 2017

Great compressible warm sleeping bag

Very impressed with this sleeping bag! it fits my requirements well and is value for money. I made a video on the compressed size of the bag which I could not find much info on when I purchased the bag. As always Snowys have the best price and service in Australia.

- WA
Mar 27 2017


I love it! ZIt's so warm and so easy to use and stuff!!!!!!

- Somewhere
Mar 21 2017

Great service

The bag is fantastic for 3 season Tassie bushwalking conditions. Snowy's price was much cheaper than local stores even with shipping included. Delivered next day!

- Devonport
Mar 06 2017

Very happy

Great bag. It's light, packs small, keeps me warm and I can adjust the zips for climate control. Shape is good, I don't feel constricted.

- South West Victoria
Feb 22 2017


We purchased two of these sleeping bags for our trip to PNG to trek Kokoda. Worked a treat.
We have also used on numerous camping trips in WA. The sleeping bag has worked well in the different climates and environments. And is snug and comfortable. Very happy with the decision to purchase the Trek TKII

- Perth
Feb 17 2017

Great sleeping bag

Very comfortable and warm
Can be used as a doona in warm conditions. Packs small.
Used for motorcycle camping.

- Perth
Feb 17 2017

Great sleeping bag

Light weight and comfortable
Used for motorcycle camping
Very happy with it

- Perth
Feb 10 2017

Awesome bag

My first higher end bag. Absolutely awesome. Great all year bag for temperate climates.

- 2540
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
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Even distribution of down1 answer

I recently bought this bag from Snowy's and noticed that the down is not evenly distributed throughout the bag. How is this rectified or is there a bigger issue with the bag?

- Gosford(1 year ago)

G'day Nick,

As the baffles on the Trek TkII Sleeping Bag are filled with loose down, it is normal for it to sometimes settle to one side. You may have to shake out to let the down puff up properly.

There should be an even amount of down in each baffle, so if you give it a go trying to move the down around, and you still feel like it doesn't look right - give us a call and we'll try to get to the bottom of it. 

- Snowys(1 year ago)

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

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

- Nsw(1 year 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 year ago)

Is this product washable?1 answer

Please advise the care instructions

- Rozelle(1 year 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(1 year ago)

Choose from 4 sizes1 answer

But how long is short, regular and long?

- Boronia(1 year 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(1 year ago)

Which sleeping bag1 answer

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(1 year 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(1 year ago)

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

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

- HAMILTON HILL, WA(2 years 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(2 years ago)

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

- Dandenong(3 years 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(3 years ago)

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

- Berwick(3 years 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(3 years ago)

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

- Queanbeyan(3 years 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(3 years ago)
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