Sea to Summit Latitude LT1 Sleeping Bag

Designed for a broad range of activities in a variety of environments, the Sea to Summit Latitude is our most versatile sleeping bag.


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On nights where snow turns to rain and you’re struggling to decide which of two sleeping bags to take up on the mountain, our Latitude Lt Series bags provides the answer.

Featuring a tapered rectangular shape, the Latitude series offers comfort in the widest range of temperatures. By utilising our 2D NanoShell™ fabric and 750+ Loft ULTRA-DRY Down™, we have created a bag that is similar in weight to our traditional mummy bags, while offering additional internal wriggle room for increased comfort. With the ability to be opened out into a full quilt when sleeping in huts and zippered up for winter camping in sub zero conditions, the Latitude series can be used all year round. The oversized neck-collar and hood-seal keeps drafts out, minimising heat loss around the face. The oversized zipper draft tube is fitted with the lightest and stiffest anti-snag material, and a security pocket located inside the bag is easily accessible. A side block baffle construction maintains a 60/40 down fill ratio for maximum insulation.

The soft touch lining fabric is down-proof by construction and highly breathable offering a comfortable sleep. The Latitude series is our choice for trekking the Annapurna circuit in the Himalaya, ski touring hut-to-hut in the Alps and walking the Western Arthurs in Tasmania. Technical Tapered Rectangular The Latitude tapered rectangular shape is cut with a larger hood, broader shoulders, large chest and a wider, roomier footbox to provide a more comfortable sleeping bag while maintaining thermal efficiency. The addition of a full length side and foot zip allow for conversion from a warm winter bag to a quilt, offering the greatest versatility in a cold weather sleeping bag.

  • Technical tapered rectangular shape and anatomically tapered foot box
  • 2D Nanoshell
  • Differential cut shell
  • ULTRA-DRY Down™ 750+ Loft – 90/10 Premium Duck Down
  • Offset baffles with 60/40 fill ratio combined with side block baffles
  • Zip draft tube with anti-snag, neck draft tube with dual elastic adjustment
  • Cushioned internal hood drawcord with dual adjustment
  • 2 way YKK #5 zips with separate foot zip, as well as internal medium sized zip pocket
  • Includes lightweight Ultra-sil® compression bag and a combined storage cell/laundry bag

Sea to Summit Latitude LT1 Sleeping Bag:

Size/Variation: Short Regular Long
Width (Shoulders): ø 151cm ø 155cm ø 165cm
Recommended User Height: <165cm <183cm <192cm
Fill Weight: 330g 350g 390g
Total Weight: 800g 880g 980g
Compressed Volume: 6.1L

Sea to Summit Latitude LT1 Temperature Rating:

Size/Variation: Short Regular Long
Comfort ℃ +2
Lower Limit ℃ -4
Extreme ℃ -21

Additional information


Short, Regular, Long


Sea to Summit

Sea to Summit is an innovative design and product development company that engineers a wide range of intuitively simple products that help make time in the outdoors fun, efficient and comfortable. From our West Australian base, Sea to Summit has grown into an award-winning global brand sold in more than 60 countries. Significant growth and international recognition has strengthened our original ethos ‘to equip and inspire’ and it continues to drive our research and development of the best materials and production methods. It inspires new product innovations that keep us at the forefront of bringing lighter, better made, better performing gear to outdoor enthusiasts around the world.


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