Spark Spi


Updated for 2019, Sea to Summit's Spark series of sleeping bags are designed to be the pinnacle of lightweight warmth for any conditions - an ultralight down bag for travellers, adventure racers and minimalists of all persuasions.

The Spark SpI uses the highest possible quality of responsibly-sourced down, 850+ loft, Ultra-Dry water repellent European goose down, and an ultra-thin 10D nylon shell. It's no slouch in the design department either: the mummy shape, full hood and short zip conserve heat efficiently, and vertical chest baffles prevent migration when horizontal. Even better - it's so thin it can be used as a liner or booster bag to add several degrees to your other bags. Talk about versatility. All this and it fits in the palm of your hand. Comes with compression sack and storage cell.

For more on how to choose a sleeping bag, check out our Sleeping Gear Guide.

Item   Sea to Summit Spark SpI Sleeping Bag
Best Use   Hiking; Travelling; Cycle Touring; Liner Bag; Adventure Racing
Weight   Regular - 340g, Long - 385g
Insulation   Responsibly-Sourced 850+ Loft Ultra-Dry Goose Down
Fill Weight   Regular - 180g, Long - 205g
Shell   7D & 10D Nylon Shell; Sewn Through Construction
Comfort Temperature Range (EN13537 Rating)   +9°C to +5°C
Shape   Mummy
Packed size   1 Litre
Shipping Information

Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.

About Us

Who we are

"Established in 1968 as Southern Cross Equipment, we are now a member of a retail company called The Outdoor Life Group. Private ownership provides us with the freedom to choose our own business path. We have therefore developed a retailing concept that excites us, and which we hope will inspire you.

Trek & Travel combines the best outdoor products from around the world with very experienced staff who all share a passion for travel and adventure. This passion for the wilderness, cultures and heritage of the planet keeps us actively seeking new places to explore.

We hope that you find us both welcoming and knowledgeable, and always willing to help you plan your next adventure."


Sample Facebook Testimonials

Amanda Warriner - 5★ "I spent close to 3 hours in this store today, being fitted for and choosing a pack, and the staff are fantastic. Helpful, knowledgeable, patient and friendly - and I think I'm probably a fussy customer and I have difficulty finding packs that fit comfortably. Has to be my best experience in this kind of store to date."

Tom Brickhill - 5★ "My favourite outdoor shop in Sydney. This is where you go if you want to see gear stocked because of it's quality, not just because it's corporate overload has pumped out another 10,000 puffer jackets that need to be moved before next season. Knowledgeable staff that actually partake in trekking and travelling themselves. Definitely worth dropping in!"

Adam Jude Baus - 5★ "Always friendly, helpful staff with great knowledge. Great range of good quality products (nothing really low end) including Australian/NZ brands e.g. Wilderness Equipment, One Planet and Aarn. Never had a fuss with exchanging unused gear within the 2 week period."

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