Sea to Summit Spark Down 45 F Sleeping Bag product image

Sea to Summit Spark Down 45 F Sleeping Bag

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About This Item

Temp Rating

35 Degrees or Higher

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
  • Web ID: 23S2SASPRKDWN45FSCSLA
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ShapeMummy
Temp Rating45 Degree (F) / 7 Degree (C)
Comfort Temp*51 Degree (F) - ISO
Limit Temp*45 Degree (F) - ISO
WeightRegular: 12.8 ounces; Long: 13.7 ounces
Insulation TypeDown
Fill Power850-Fill-power goose down
Fill WeightRegular: 5.3 ounces; Long: 6.1 ounces
Shoulder GirthRegular: 61" ; Long: 65"
Hip GirthRegular: 61" ; Long: 65"
Compressed VolumeRegular: 2.4 liters ; Long: 2.9 liters
Shell Fabric10-Denier nylon
Zipper LocationLeft
Stuff Sack IncludedYes
Stuff Sack VolumeRegular: 2 liters ; Long: 3 liters

REVIEWS

4.8

78 Reviews

Images

Perfect Summer Bag

[This review was collected as part of a promotion.] Had this bag with me on an 8-day bikepacking trip round the Pacific Northwest. Light, packs small, and functions as you’d expect (no zipper snags)!

Overall Great Warmth/weight Ratio

[This review was collected as part of a promotion.] Over three months I've taken this bag camping on the Alaska Marine Highway (ferry) and a couple 1-3 nighters in the Cascades. It's not the warmest bag you'll find, and on a cold night in the mountains (in a 3-season tent), I was a little bit cold -- though not uncomfortably so. However, it's a great compromise on warmth/weight -- and especially warmth/volume. It packs up so small, best part. The half zip is a little annoying, but I understand the compromise.

Spark 15f Regular

[This review was collected as part of a promotion.] Amazing bag super compact and light and met all temp expectations

Spark Bag

[This review was collected as part of a promotion.] Do not like 3/4 zipper. Makes bag difficult to get in out. Do appreciate the lightness of the bag.

Spark Women's Down Sleeping Bag- 15

[This review was collected as part of a promotion.] I was tried of being cold on camping trip, so I pulled the trigger and bought the Spark bag. I love it!!! I'm 5'4" and went with the regular size bag and when I got it it felt short. I returned for the long and I am so glad I did. This bag is so soft, comfortable, and warm. It packs down but I wish it was a little smaller.

Read All Reviews (78)