Sea to Summit Trek TK II


spring 2010 short regular long
Weight 2 lb 3 oz / 1000 g 2 lb 4 oz / 1020 g 2 lb 7 oz / 1110 g
Fill weight 1 lb 2 oz / 500 g 1 lb 2 oz / 500 g 1 lb 3 oz / 550 g
EN comfort 30 F / -1 C
EN lower limit 18 F / -8 C
EN extreme -13 F / -25 C
Fill 650-fill duck down
Shape Semi-rectangular
Max user height 5 ft 7 in / 170 cm 6 ft 0 in / 185 cm 6 ft 8 in / 205 cm
Shoulder girth 59 in / 150 cm 60 in / 152 cm 61 in / 156 cm
Hip girth 58 in / 148 cm 59 in / 150 cm 60 in / 152 cm
Foot girth 39 in / 100 cm 40 in / 101 cm 40 in / 102 cm

Manufacturer's Description

Visit Sea to Summit's Trek TK II page.

Retailers' Descriptions

Here's what other sites are saying:

Free Shipping. Sea to Summit Trek TKII Sleeping Bag FEATURES of the Sea to Summit Trek TKII Sleeping Bag ULTRA-DRYDown 650+ Loft 85Adeg Down Cluster Premium Duck Down Length / zip options: Regular - left or right zip Long - left zip Season ratings: Indoor/Summer

- Moosejaw

Your summer treks just got a heck of a lot easier, comfier, and more fun with Sea To Summit's Trek Tk II Sleeping Bag. Pairing ULTRA-DRYDown with a breathable liner and some convenient storage turns this bag into one that you'll want on every one of your summer escapades. Easy to pack, store, and rest in, you'll have a pretty hard time finding a spot that you won't love resting in your Trek Tk II Sleeping Bag. PRODUCT FEATURES: Down: ULTRA-DRYDown 650+ Loft 85% Down Cluster Premium Duck Down Compressed Size: 6 liter Fill Weight: 17.6 oz/500g Bag Weight: 2 lb 4 oz/1020g Season ratings: Indoor/Summer Temp Rating: 18 F (EN Lower Limit)/-8 C (EN Lower Limit) 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 secuity 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

- Appalachian Outdoors

This lightweight 3-season bag has a roomy semirectangular shape and high-loft water-resistant down insulation for excellent warmth and compressibility.


Incorporating their 2D PermaShell fabric and a premium 650 loft down, Sea to Summit 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 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.