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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
  • Country of Origin : Imported
  • Web ID: 23S2SASPRKDWN45FSCSLA
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

87 Reviews

Images

Fabulous Sleeping Bag

[This review was collected as part of a promotion.] Love this sleeping bag. I’m particularly impressed with how small it packs down to and how little it weighs, which is important for me as a bike packer.

Double Spark

[This review was collected as part of a promotion.] Really a very nice double sleeping bag. Enables a warm sleeper(me) to keep cold sleeper (wife) warm, happy campers! The straps for keeping pads together are a fail. Had to order SToS straps instead.

Scary Light

[This review was collected as part of a promotion.] I get cold very easy, even in warmer temps. I was so nervous to try out this bag, because it feels super lightweight and airy. I thought it couldn’t possibly be warm enough. I got the chance to test it out recently, and even brought an extra bag just in case I needed to double up. No sir! I slept snug as a bug the entire trip. Not only is it cozy and lightweight, it also packs down small. Perfect for fitting in a suitcase, backpacking, or even alpine.

Great 👍🏾

[This review was collected as part of a promotion.] Slept great on the air pad and tucked nicely in the spark. Temps down to 30 degrees and woke up with frost on the ground. The 15 degree sleeping bag did great.

Warm And Compact

[This review was collected as part of a promotion.] Love this bag, I should have spent the money years ago on a bag of this quality instead of trying to save money on a 650 FP bag. It's light, compresses well, and has been super comfortable to sleep in.

Read All Reviews (87)