Sea To Summit Trek TkII 18ºF Ultra-Dry Down Sleeping Bag

Bring the comfort of a tapered-rectangular shape and the versatility of a dual-zip ventilation system wherever your travels take you.

The Trek’s™ full-length side zipper and secondary foot box zipper allow you to increase ventilation or open the Trek completely flat like a comforter, and the quality down will keep you warm and snug on chilly nights.

• Tapered rectangular sleeping bag – allows more natural sleeping position without compressing down insulation and creating cold spots
• Ultra-Dry Down® 650+ loft 85% down cluster premium duck down
• Down certified to the Responsible Down Standard (RDS)
• Full-length left-side YKK® #5 main side zipper and foot box zipper 
• Dual zippers provide superior ventilation and allow bag to be used as comforter
• Zip to any Altitude™, Journey™ or Venture™ sleeping bag to form snug double sleeping bag
• Shaped hood and oversized zipper draft tubes seal in warmth and keep cold out
• Internal pocket for phone, GPS or other valuables
• Lightweight Ultra-Sil™ compression bag and storage cell included
• Manufacturer’s lifetime guarantee
• Shell material: 30D nylon
• Fits up to: 6′ 0″ (regular), 6′ 4″ (long)
• Temperature (EN rating): Comfort range 18ºF to 65ºF 
• Women’s temperature (EN rating): 30º comfort
• Compressed volume: 6.1 liters (regular)
• Compression sack: 10 to 3.3 liters (regular), 14 to 4.5 liters (long)
• Fill weight: 17.6 oz. (regular); 19.8 oz. (long)
• Suggested use: Hiking, camping, travel