Sea to Summit Trek TK I


spring 2011 regular long
Weight 1 lb 13 oz / 830 g 2 lb 2 oz / 970 g
Fill weight 12 oz / 350 g 14 oz / 400 g
EN comfort 41 F / 5 C
EN lower limit 32 F / 0 C
EN extreme 5 F / -15 C
Fill 650-fill duck down
Shape Semi-rectangular
Max user height 6 ft 0 in / 180 cm 6 ft 8 in / 200 cm
Shoulder girth 60 in / 152 cm 61 in / 156 cm
Hip girth 59 in / 150 cm 60 in / 152 cm
Foot girth 40 in / 101 cm 40 in / 102 cm

Manufacturer's Description

Visit Sea to Summit's Trek TK I page.

Retailers' Descriptions

Here's what other sites are saying:

Insulated with high-loft water-resistant down for excellent warmth and compressibility, this lightweight 3-season bag has a semirectangular shape that provides a little extra room to shift about.


Your trekking buddy's balloon-like synthetic sleeping bag fills his whole backpack; your Sea To Summit Trek TkI 32 Degree Down Sleeping Bag compresses down to the size of three water bottles, so you have room for the essentials plus a few souvenirs. It's stuffed with lofty, moisture-resistant Ultra-Dry Down 650+ and sheltered with breathable, weather-repelling 2D Perma Shell, so when the going gets cold or damp your bag won't wilt or freeze. And a cushioned hood, draft tube, and tapered rectangular shape will keep you so cozy you'll sleep like a baby. Now only if your partner would stop whimpering.


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.


On Sale. Free Shipping. Sea to Summit Trek TKI Sleeping Bag FEATURES of the Sea to Summit Trek TKI Sleeping Bag Tapered rectangular 2D PermaShell DWR shell fabric Ultra-Dry Down 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 YKK5 zips with separate foot zip Large sized internal zip pocket Includes lightweight Ultra-Sil compression bag, mesh storage cell and laundry bag SPECIFICATIONS of the Sea to Summit Trek TKI Sleeping Bag Comfort: 41Adeg F / 5Adeg C Lower Limit: 32Adeg F / 0Adeg C Extreme: 5Adeg F / -15Adeg C Ultra-Dry Down 650+ Loft 85% Down Cluster Premium Duck Down Season Rating: Indoor/Summer Suggested Use: Backpacking, travel, hiking, camping Compressed Volume: 5.1 liter Compression Bag: Small: 10 to 3.3 liter SPECIFICATIONS for Regular Fill Weight: 12.4 oz / 350 g Bag Weight: 1 lb 13 oz / 830 g Length / Zip Option: Left or right zip SPECIFICATIONS for Long Fill Weight: 14.1 oz / 400 g Bag Weight: 2 lbs 2 oz / 970 g Length / Zip Option: Left zip

- Moosejaw