Sea to Summit Trek Tk Down Sleeping Bag

Our Trek Series sleeping bags, with their traditional comfort and value and anything but traditional design approach, are what we take on adventures on a tight budget. The vertical chambers over the chest area ensure that there are no cold bridges and that the warmth stays in the sleeping bag. By using this design with separate vertical chambers and a 60/40 down distribution ratio, we ensure that the down on top does not slip sideways and that there is maximum thermal insulation in the upper body area.

The lightweight material reduces weight and packing volume, while the full-length two-way zipper and separate footbox zipper allow the sleeping bag to be fully opened and used as a quilt. The footbox zipper is perfect for extra ventilation or to give your feet freedom of movement.

The 3D sidewall of the outer shell allows the down to develop its optimal loft all the way to the edges for maximum insulation. In cold conditions, the drawcord allows the hood to be pulled tight against the head, while in warm conditions it lays flat to reduce heat buildup. The large-diameter zipper channels prevent body heat from escaping. The 20D inner material is soft and very breathable.

Temperature zones TkI
comfort 5 °C
lower limit - 1 °C
extreme - 16°C

Temperature zones TkII
comfort - 1 °C
lower limit - 8 °C
extreme - 25 °C

Temperature zones TkIII
comfort - 6 °C
lower limit - 12 °C
extreme - 31 °C

Details

• Tapered Rectangular shape offers more room than traditional mummy shaped sleeping bags
• Certified 650+ loft ultra-dry down provides compressible comfort and excellent insulation
• Ultra-lightweight materials minimize weight and pack size
• Vertical chambers in the chest area optimize down distribution and prevent cold bridging
• Two-way zipper on the side and additional zipper on the foot section allow you to turn the sleeping bag into a blanket as well
• Large zipper channel with anti-snag prevents body heat from escaping
• Large inner pocket
• 3D side panel maximizes down insulation
• 3D hood can be pulled up tightly when needed
• The Trek TkIII features a hood with thermal collar