Sea To Summit Spark Womens Sleeping Bag

Save $50.00

Model: 7°C REGULAR
Sale price$599.99 Regular price$649.99


The Ultraligfht Spark Women's Sleeping Bag is built for women who want minimal weight but maximum comfort in their adventures. The Women's Spark lineup demonstrates Sea to Summit's 100% commitment to building a sleeping bag that's perfect for you. Women's specific shape and body mapping result in warmth and comfort without the weight. RDS-certified 850+ fillpower goose down treated with a non-PFC Ultra-Dry Down treatment provides superior insulation, while a technical hood and zipper draft tube prevent precious warmth from escaping. A super-breathable 10D liner fabric rounds off the comfort profile, and a 10D shell with a non-PFC DWR combined with a highly water repellent hood and footbox fabric keep moisture out Couples can zip the full-length zipper Women's Spark to an equivalent Unisex Spark for extra comfort and thermal efficiency.

Available in 7°C and -1°C lower comfort temp rating models.

  • The regular 7°C bag weighs 382g and 432g for the long, with compression size of 3L
  • The regular sized -1°C weighs 584g and 639g for the long, with compression size of 5L reg and 8L long



  • A Women's Mummy Fit with generous anatomical footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight. Wider at the hips and narrower at the shoulders for a better fit and heat retention for women.
  • 10D nylon shell and lining fabric offers breathability, protection and effective temperature regulation for premium comfort in the outdoors; PFC-free DWR (durable water repellent) treatment keeps the hood and footbox highly water resistant
  • 850+ Fill Power, RDS-certified, Goose Down with ULTRA-DRY Down treatment for improved water resistance in damp conditions
  • Half-length #5 zip with anti-snag zip plow and two sliders
  • Vertical chest baffles, horizontal baffles in the lower half and base, box wall baffles in the top half and sewn-through quilted construction lower half
  • Technical fitted hood with soft touch adjustment, extra deep for cosy-like feel
  • Standard front draft collar
  • Single, down-filled, draft tube along the top of all zips
  • QuiltLock System and drawcord footbox enables quilts to be secured to Sea to Summit sleeping bags for added functionality and freedom
  • Comes with an Ultra-Sil compression bag and a handy looser storage cell
  • Ultralight does.t have to mean ultra-tight: The Spark mummy sleeping bags are snug but still have enough wiggle room for the performance-oriented, backcountry user


  • Fits to 170cm (Regular), 185cm (Long)
  • Shoulder Width 71cm (Regular), 76cm (Long)
  • Foot Width 46cm (Regular), 51cm (Long)
  • Fill ULTRA-DRY Goose Down 850+ Loft, RDS certified
  • Outer Material 10D nylon
  • Inner Material 10D nylon with a non-PFC DWR finish

7°C Spark

  • Compression 3 Litres (both sizes)
  • Fill Weight 200g (Regular), 230g (Long)
  • Average Weight 382g (Regular), 432g (Long)
  • Temperature Rating 7°C comfort rating woman / 4°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022

-1°C Spark

  • Compression 5 Litres (Regular), 8 Litres (Long)
  • Fill Weight 375g (Regular), 430g (Long)
  • Average Weight 584g (Regular), 639g (Long)
  • Temperature Rating minus 1°C comfort rating woman / minus 7°C Lower comfort rating for men; Temperature rated in accordance with ISO 23537-1:2022


  • ULTRA-DRY Down™: With the introduction of water-repellent ULTRA-DRY Down™ Seat to Summit have virtually eliminated the negative effects moisture has on down. The ULTRA-DRY Down™ water-repellent treatment protects the down from external moisture and condensation from inside the bag. It is a permanent (no loss of treatment effect has been seen in over 14 wash cycles) Nano-level water repellent polymer treatment applied to Sea to Summit high loft, high quality down. The Nano-thin treatment vastly improves the down's reaction to water without effecting its weight or loft performance. ULTRA-DRY Down™ retains over 60% more loft and absorbs 30% less moisture when compared with untreated down. Sea to Summit sleeping bags dry out 60% faster than bags with untreated down. The Nano-level treatment also inhibits bacterial and microbial growth, which makes Sea to Summit sleeping bags more hygienic and improves their lifespan.

  • Responsible Down Standard (RDS): The RDS is helping to shift the entire down and feather industry towards more humane animal rearing and handling practices. Overseen by the industry leading Textile Exchange, the RDS requires independent, third party assessments of all aspects of animal rearing and handling throughout the entire supply chain. By only using down that meets the audited requirements of the RDS we can have confidence that each phase of the collection process has been completed with the welfare and ethical treatment of waterfowl in mind. To find out more about how the RDS is improving animal welfare during down collection, please visit (link will open a new window).

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