Sea to Summit Spark Pro -1°C Down Sleeping Bag

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ULTRALIGHT THREE-SEASON PERFORMANCE

Sea to Summit’s Spark Pro –1°C Down Sleeping Bag pairs premium 950+ fill-power RDS-certified Ultra-Dry Down with ultralight 10D nylon shell and liner for outstanding warmth-to-weight in cool conditions. The technical hood, anatomical footbox and Free-Flow Zip system seal in heat where you need it most and allow versatile venting on warmer nights—ideal for ultralight backpacking down to –1 °C.


Why Spark Pro –1°C Down Sleeping Bag?

This ultralight mummy bag balances minimal bulk with strategic insulation and ventilation, keeping you comfortable in three-season conditions.

Take on crisp nights—add the Spark Pro –1°C Down Sleeping Bag to your cart at Land & Sea today.


Spark Pro –1°C Down Sleeping Bag Features

  • 950+ Fill-Power Ultra-Dry Down: RDS-certified goose down for superior loft and moisture resistance.
  • Featherweight 10D Nylon Shell & Liner: Breathable fabrics with PFC-free DWR treatment on critical zones.
  • Technical Hood & Anatomical Footbox: Engineered for heat retention without restricting movement.
  • Free-Flow Zip System: YKK® #5 side zipper plus footbox zips for customizable ventilation and snag-free operation.
  • Hybrid Baffle Construction: Combines box and sewn-through baffles to optimize warmth-to-weight at –1 °C.
  • Lifetime Guarantee: Sea to Summit support for the life of your bag.

Spark Pro –1°C Down Sleeping Bag Specifications

  • Comfort Rating: 30 °F (–1 °C).
  • Fill Power: 950+ goose down (RDS-certified, Ultra-Dry).
  • Shell & Liner Fabric: 10D nylon with PFC-free DWR treatment.
  • Weight: Not specified [Regular], Not specified [Long].
  • Compressed Volume: 5.3L [Regular], 5.5L [Long].
  • Shape: Ergonomic mummy for optimal heat retention.
  • Size Options: Regular (fits users up to 185 cm), Long (fits users up to 198 cm).
  • Includes: 40D recycled nylon compression bag.

 

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