Sea to Summit: Trek Tk II 18 Down Sleeping Bag

An image of Trek Tk II 18 Down Sleeping Bag
  • Zoom in for more detail

Our Price: $269.00 to $299.00

[$269.00] - 2D PermaShell  -  Small / Right Zip     IMS#: 498520
[$279.00] - 2D PermaShell  -  Regular / Right Zip     IMS#: 498521
[$279.00] - 2D PermaShell  -  Regular / Left Zip     IMS#: 498522
[$299.00] - 2D PermaShell  -  Long / Left Zip     IMS#: 498523
  • Qualifies for free shipping.

Color: 2D PermaShell

2D PermaShell

Caption: Drawcord hood in use

Drawcord hood in use

Caption: Stow pocket in use

Stow pocket in use


The Trek Tk II 18 Down Sleeping Bag from Sea to Summit is a spacious bag for spring, summer, and autumn trekking. With a tapered rectangular shape, you can move around as you sleep instead of laying awake, feeling claustrophobic. The 2D PermaShellâ„¢ fabric is treated with DWR (Durable Water Repellant), making this a great bag for just about any adventure!


  • Tapered rectangular shape is spacious, but warmer than a typical rectangular bag
  • 2D PermaShellâ„¢ is a high-density nylon-woven fabric with a DWR (Durable Water Repellant) finish to deal with moisture
  • 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
  • Two-way YKK® #5 zips with separate foot zip
  • Large-sized internal zip pocket is a great place for your headlamp
  • Includes lightweight Ultra-Sil® compression bag, mesh storage cell, and laundry bag


Weight:Small - 2 lb 3 oz
Regular - 2 lb 4 oz
Long - 2 lb 7 oz
Temperature Rating:18 Degrees F (EN13537 Comfort Rating)
Insulation Type:650-Fill Premium Duck Down
Fill Weight:Small - 1 lb 2 oz
Regular - 1 lb 2 oz
Long - 1 lb 3 oz

Trek Series Overview

McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Summit Hut: Start Your Adventure Here