The Sea to Summit Trek 1 down sleeping bag is the perfect companion for those on the go, offering the comfort of a tapered-rectangular mummy shape and the flexibility of a dual-zip ventilation system. Wherever your travels take you, this sleeping bag will keep you warm and snug during chilly nights, thanks to its high-quality down insulation.


  • ULTRA-DRY Down: The Trek sleeping bag is filled with ULTRA-DRY Down, featuring 650+ loft and 85% Down Cluster Premium Duck Down. This down is certified to the Responsible Down Standard (RDS), ensuring both quality and ethical sourcing.
  • Dual-Zip Ventilation System: The full-length YKK® #5 main side zip and secondary foot box zipper provide superior ventilation and allow you to open the sleeping bag completely flat like a comforter, giving you control over your sleeping environment.
  • Shaped Hood and Draft Tubes: The sleeping bag features a shaped hood and oversized zipper draft tubes to seal in warmth and keep the cold out. The Trek -12°C model also includes a draft collar that fits snugly around the shoulders.
  • Internal Pocket: An internal pocket is included for storing your phone, GPS, or valuables within easy reach.
  • Includes Storage Accessories: The Trek sleeping bag comes with a lightweight Ultra-Sil compression bag for easy packing and a storage cell to maintain the bag's condition between adventures.
  • Zip Compatibility: You can form a snug double sleeping bag by zipping the Trek to any Altitude, Journey, or Venture sleeping bag from Sea to Summit.


  • SIZE: Regular Wide
  • BAG SERIES: Trek 1
  • BAG WEIGHT: 920g
  • COMPRESSION SACK: S - 10L to 3.3L
  • FILL WEIGHT: 450g
  • FITS UP TO HEIGHT: 183 cm
  • SEASON RATING: 2 Season

The Sea to Summit Trek 1 down sleeping bag offers a combination of comfort, quality insulation, and adaptability for various outdoor activities. Its dual-zip ventilation system, ethical down sourcing, and additional features make it an excellent choice for trekking, backpacking, camping, and travel, providing a good night's sleep in different environments.


Model # ATK1-RW
Barcode # 9327868095292

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