Sea to Summit Trek TkI Sleeping Bag

830g

0ºC

The classic tapered rectangular sleeping bag - redefined!

Incorporating our 2D PermaShell™ fabric and a premium 650 loft down, the Trek bags are a refined classic. The 60/40 fill ratio in the Trek bags is maintained using a side block baffle and differential cut shell. In the top of the shell a 3D side wall, a feature normally reserved for technical alpine sleeping bags, provides more space for the down to loft right to the edge of the bag.

An oversized security pocket located inside the bag is easily accessible, ideal for stashing passports and other valuables while travelling. The soft touch lining fabric is down proof by construction and highly breathable offering a comfortable sleep.

The Trek series is our choice for adventure travel and globe-trotting. Whether sleeping in hostels throughout Europe, backpacking South America or discovering the Stirling Ranges in Western Australia.

Tapered rectangular sleeping bags
The tapered rectangular design offers a good compromise between the comfort of a generous cut shape and warmth of a closer fit. A full length side and foot zip allow the Trek series to be opened out into a full duvet for use indoors and warm weather.

EN13537 Temperature Rating
Comfort	Lower Comfort Limit	Extreme
+5ºC	0ºC	-15ºC
For comparison purposes we quote the Lower Comfort Limit

Our Verdict

There's real innovation in these sleeping bags, we've searched for a long time for a quality bag that will unzip to form a duvet - this does that and so much extra. Superb functionality endorsed by reviewers across the globe.

2-Dimensional hood which easily pulls into a form fitted profile using the dual-adjustment drawcord.

The Trek series features a large internal zip pocket.

Features

• Comfort rating 0C 
• Tapered rectangular,
• 2D PermaShell™ DWR shell fabric,
• differential cut shell with 3D side walls,
• 60/40 fill ratio,
• side block baffle,
• zip draft tube with anti-snag,
• cushioned internal hood drawcord with dual adjustment,
• 2 way YKK #5 zips with separate foot zip,
• large sized internal zip pocket,
• includes lightweight Ultra-Sil® compression bag,
• mesh storage cell and laundry bag.

Specification

• Down: 650 Loft 85/15 Premium Duck Down
• Fill weight: Regular 350 g/ 12 oz
• Bag weight:Regular 830 g/1 lb 13 oz
• Regular - Left zip
• Season ratings: Indoor/Summer
• Suggested use: Trekking, Travel, Hiking, Camping
• Compression bag: Small - 10L to 3.3L
  

The full Sea to Summit sleeping bag range...

I’ve owned many different sleeping bags but I’ve never been entirely happy with any of them, they’ve always suffered a few inadequacies, some of which over time have really annoyed me – like snagging zips, poorly fitted hoods, cold spots, day-to-day growing dampness and difficult drawcords. So for a long time at Sea to Summit we have thought about this most basic outdoor necessity and wondered how, by using new materials and a fresh take on design, we could come up with a range of bags that eliminated those problems and delivered much better performance. Now at last I can confidently say we have done that!

To celebrate and mark our twentieth year, we bring you the most advanced sleeping bags available – they are lighter, warmer (for their weight), easier to use and combat moisture better than any other bags yet.

If the weight and performance of your gear is important to you, I believe our sleeping bags set a new benchmark.