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Sea to Summit

Sea to Summit Trek TkII Sleeping Bag long denim/navy (2019)

ID: 936234
- 13%
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Product Description

Traditional comfort and value, with an anything but traditional design approach, the Trek Series sleeping bags are what backpackers grab for globe-trotting adventures. Vertical baffles over the chest section ensure the down insulation cannot migrate or shift to the outside of the bag during sleep, creating cold spots. A side block baffle construction maintains the 60/40 fill ratio, keeping more down on the top of the bag for maximum insulation.

Ultra Dry Down
UltraDry Down is a PFC-free water-repellant treatment applied to the down used in all Sea to Summit sleeping bags. UltraDry Down retains over 60 % more loft, absorbs 30 % less moisture and dries out 60 % faster when compared to untreated down – which means the down will insulate better even in damp conditions. The treatment also inhibits bacterial growth, making your bag last longer. UltraDry Down treatment is an environmentally friendly application.


  • Certified 650+ Loft ULTRA-DRY Down provides compressible comfort and excellent insulation
  • Ultralight materials minimise weight and pack size
  • Sleeping bag can also be transformed into a blanket
  • Large zipper channel with anti-snag prevents body heat from escaping
  • 3D sidewall maximizes down insulation
  • 3D hood can be tightened if required
  • Includes ultra-light Ultra-Sil Compression bag
  • Zip Coupling: This sleeping bag can be zipped together with other models
season: 3-season sleeping bag  
Sleeping Bag
Category: Down sleeping bag
Form: Mummy form
Characteristics: Connectable, With compression strap
Temperature Range
Comfort Temperature (°C): -1 °C
Max temperature: -8 °C
Extreme temperature: -26 °C
Upper Material: 30D Nylon
Cover material detail: 100% nylon
Inner Fabric: 20D Nylon
Lining detail: 100% nylon
Filling: Goose down
Special features: Contains non-textile parts of animal origin
Fill Power (cuin)
650 cuin  cuin
Sleeping bag: 995 g
Filling: 500 g
Height (max): 192  cm
Model year
Product number
Customer Ratings
1 Customer Ratings
5 Stars
4 Stars
3 Stars
2 Stars
1 star
Sleeping bag with freedom of movement
Schlafsack mit Bewegungsfreiheit
Translated from German To the original

I was looking for a warm yet lightweight sleeping bag for my Iceland trekking. Since I feel confined in the "normal" tight mummy sleeping bags, I have chosen this sleeping bag. The sleeping bag has proven itself in Iceland, I always had warm and appreciated the "multi-seat".

Ich habe für mein Island-Trekking einen warmen & doch leichten Schlafsack gesucht. Da ich mich in den "normalen" engen Mumienschlafsäcken eingeengt fühle habe ich mich für diesen Schlafsack entschieden. Der Schlafsack hat sich in Island bewährt, ich hatte immer warm und habe den "Mehrplatz" geschätzt.

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