Incorporating Sea To Summit 2D PermaShell fabric and a premium 650+ Loft ULTRA-DRY Down, the Sea To Summit Trek TkIII is a refined classic. The 60/40 fill ratio in the Trek bag 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.
- Tapered rectangular; 2D PermaShell DWR shell fabric differential cut shell with 3D side walls
- 60/40 fill ratio side block baffle zipper draft tube with anti-snag cushioned internal hood drawcord with dual adjustment
- 2 way YKK #5 zippers with separate foot zip large sized internal zipper pocket
- includes lightweight Ultra-Sil compression bag, mesh storage cell/laundry bag.
- Down: ULTRA-DRYDown 650+ Loft 85% Down Cluster Premium RDS Duck Down
- Fill weight: 25oz
- Bag weight: 2lb 11oz
- Regular-Left zip
- Season ratings: Spring/Autumn/Winter-light
- Compressed volume: 7.05 L (ASTM)
- Compression bag: 15 to 5 L
- Temperature rating: 12F Lower limit (EN 13573)