Sea to Summit Spark Down 15F Sleeping Bag - Double

About This Item

Temp Rating

15 to 30 Degrees

Insulation Type

Down

Design:

  • Uses a full-box baffle construction to accommodate extra down and reduce cold spots
  • Expedition mummy bag sizing provides extra space for layered clothing or extra wiggle room
  • Vertical baffles in the chest optimize the position of down to prevent it from moving during use
  • Full side zipper with 2 sliders provides easy access and extra ventilation options
  • Zipper draft tube, hood, and front neck draft collar all prevent warmth being lost when needed most
  • Ultra-light 7D and 10D fabrics for minimal weight and packed size
  • Contoured mummy shape for comfort and efficient insulation

Technology:

  • RDS 850+ Loft Premium Goos ULTRA-DRY Down™ for maximum insulation valve

Additional Details:

  • Recommended Max User Height: 6’
  • Brand : Sea to Summit
  • Country of Origin : Imported
  • Web ID: 23S2SASPRKDWN15FSCSL
  • SKU: 25757216
ShapeMummy
Temp Rating15 Degree (F) / -9 Degree (C)
Comfort Temp*29 Degree (F) - ISO
Limit Temp*15 Degree (F) - ISO
WeightRegular: 1 lb. 9.7 oz ; Long: 1 lb. 11.7 oz ; Double: 3 lb. 6.4 oz
Insulation TypeDown
Fill Power850-Fill-power goose down
Fill WeightRegular: 1 lb. 0.9 oz ; Long: 1 lb. 3 oz ; Double: 2 lb. 2.7 oz
Shoulder GirthRegular: 61" ; Long: 65" ; Double: 105"
Hip GirthRegular: 61" ; Long: 65" ; Double: 105"
Compressed VolumeRegular: 6.8 liters ; Long: 7.6 liters ; Double: 14.3 liters
Shell Fabric10-Denier nylon
Zipper LocationLeft
Stuff Sack IncludedYes
Stuff Sack VolumeRegular: 13 liters ; Long: 13 liters ; Double: 20 liters

REVIEWS

4.8

57 Reviews

Received incentive

Finally A Cold-weather Bag That Fits A Big Guy (And A Side Sleeper)

I’m 6'4", about 240 lbs—built more like an aging NFL linebacker than a thru-hiker—and this bag actually fits. Plenty of room to move without cold spots, which matters if you’re a side sleeper like me. It’s warm, comfortable, and feels thoughtfully designed rather than scaled up as an afterthought. Build quality is excellent across the board, and both the storage bag and compression sack are noticeably higher quality than what usually gets tossed in. If you’re bigger, move around in your sleep, and still want real 0-degree performance, this bag delivers.

Received incentive

Best Sleeping Bag.

I tried this sleeping bag all the way down to 5°F with layered clothing, and it did fantastic. Super comfortable. I highly recommend.

Received incentive

Excellent Quality, Warm And Comfortable1

I've used the Sea to Summit Spark 30 on a few trial runs and am impressed with the quality of the bag, compression sack and storage bag! The sleeping bag has been warm and comfortable and packs well. I'm an avid hiker/thru hiker and this bag is a great addition to my gear closet!!!

Received incentive

Great Bag, Too Small .

Great bag, too small . Insulation fantastic and so light!

Received incentive

Perfect Bag!

Packs down super well, love that I can unzip the bottom and walk around LOL. Big fan!

Read All Reviews (57)