Sea to Summit Spark Down 45 F Sleeping Bag product image
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

77 Reviews

Images

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.

Spark Down Sleeping Bag

[This review was collected as part of a promotion.] I plurchased this for a fast thru hike on the Superior Hiking Trail. Nights got down to 40 degrees. I-was a little worried about the chill and the bag rating since I'm a t-shirt underwear and sometimes socks guy. But this was perfect. Finally a bag true to its rating. Yes my tent was small and my pad reflects heat as well. but the bag was warm and comfortable and packs down sooo crazy tiny.

Read All Reviews (77)