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Sea to Summit Trek TKI

3 season sleeping bag with comfortable rectangular shape.

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Availability: In stock

The opinion of Aventure Nordique

3 season sleeping bag with comfortable tapered rectangular shape. This 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 TkII to be opened out into a full duvet for use indoors and warm weather.


  • Tapered rectangular for more space and comfort than a traditional mummy bag

  • RDS 650+ Loft ULTRA-DRY Down offers excellent insulation and compressibility

  • Lightweight fabrics for reduced weight and bulk

  • Vertical chest baffles prevent down migration and cold spots

  • Two-way #5 YKK side and separate foot zip allows bag to double as a quilt and provides extra ventilation options

  • Oversized zip draft tube with anti-snag materials

  • Large internal security pocket

  • 3D side-wall baffle maximises down insulation right to the edge of the bag

  • 3D hood draws in tight when needed

  • Soft touch 20D lining fabric is lightweight and highly breathable, durable 30D Nylon shell

  • Includes Ultra-Sil Compression Bag for compact storage

  • This bag is designed to pair with another

Technical details

Manufacturer Sea to Summit
Product name Trek TKI
Article number DSBTK1
Season 3 season
Model Unisex
Fill Duck Down
Cuin Ultra-Dry Down 650+ Loft 85/15
Comfort rating 5°C
Comfort Limit 0°C
Extreme rating -15°C
Dimensions R & RW: max user height < 183 cm - L: max user height < 198 cm
Shoulders - Hips - Feet: R : 152/146/102 cm - RW : 172/161/122 cm - Long : 162/157/108 cm
Folded size R : 4,6 L - RW : 6,2 L - L : 5,5 L
Outer shell Nylon 30D
Inner lining Nylon 20D
Fill Weights R: 350 g - RW : 450 g- L : 400 g
Weight R : 760 g - RW : 920 g- L : 850 g
Colour Blue
Country of Manufacture China


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