Sea To Summit

TK II Sleeping Bag Long

Item Code: S2S042LL


With its classic tapered rectangular shape, the Trek II is a great all-arounder and one of our most popular sleeping bags.


Insulated with 650-fill-power duck down for warmth, light weight and compressibility; Ultra-Dry Down™ water-repellent treatment protects down from moisture

Ultra-Dry Down is a water-repellent polymer treatment applied to the 650-fill down; Ultra-Dry Down retains 60% more loft and absorbs 30% less moisture than untreated down

With a European Norm (EN) lower-limit rating of 18°F, the Tk II bag will help keep you warm on spring, summer and fall backpacking trips

Shell fabric is constructed of a high-density weave, 33-denier fabric treated with a durable water repellent (DWR) finish

Shell material is highly vapor permeable and downproof

Lining is a breathable, durable 40-denier nylon fabric with a soft touch

Full-length side zipper and foot zipper allow bag to be converted from traditional sleeping bag to a duvet/down comforter

Semirectangular shape provides more room than a mummy bag for a more comfortable sleeping bag while maintaining thermal efficiency

Differentially cut inner layer is smaller than the outer layer to create a consistent thickness of insulation that precludes cold spots

Oversize draft tube backing the 2-way zipper keeps the warmth in and the cold out; zipper is backed by stiff, antisnag tape for smooth operation

Large interior security pocket is great for stowing a few essentials, alleviating middle-of-the-night fumbling

Baffle construction allows the goose down to remain fully lofted and keeps it from shifting

Sea to Summit Trek Tk II bag comes with a Ultra-Sil® compression sack and a mesh storage sack that can be used for drying the sleeping bag in a dryer


Down: ULTRA-DRYDown™ 650+ Loft 85% Down Cluster Premium Duck Down
Season ratings: Indoor/Summer
Compressed volume: 6 Liters - Regular
Compression bag: Small - 10 to 3.3 Liters

Compressed Size 6 liter
Fill Weight 17.6 oz/500g
Bag Weight 2 lb 4 oz/1020g
Temp Rating 18 F (EN Lower Limit) /-8 C (EN Lower Limit)

Compressed Size 6 liter
Fill Weight 19.4 oz/550 g
Bag Weight 2 lb 7 oz/1110g
Temp Rating 18 F (EN Lower Limit) /-8 C (EN Lower Limit)


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