THE GAME CHANGING BAG.WORLDS SMALLEST DOWN SLEEPING BAG!
ULTRA-DRY Down protection and warmth in a minimalist packageand winner of the Gear Junkie 2013 award!
When you need a sleeping but don t want to be weighed down by one, what s to be done? Until now you either slowed yourself down with something inadequate or took the spartan option and suffered without. Now the Spark has changed the game completely. Neither comfort nor performance need be sacrificed! TimMacartney-Snape
Using the warmth of 850+ loft 90/10 goose down, the amazing moisture protection of ULTRA-DRY Down , and a micro-weight 10D Pertex shell and 15D lining, we have created one of the best warmth for weight minimalist sleeping bags available. The Spark is an ultra light bag with several key uses.
Its balance of size, weight and warmth make it excellent as a summer sleeping bag, especially for weight and space conscious cycle tourers and ultra light walkers. Its size and warmth rating works well as a liner bag, slipping inside another sleeping bag to add one or two seasons to its rating.
The secrets of the Spark s warmth to weight are in the premium quality down and high performance microweight shell and liner fabrics, the 1/3 length light-gauge #3 YKK zip and the sewn-through transverse baffle construction.
The Spark compresses so small, we had to re-engineer our compression-sacks to make one that reduced sufficiently.
The ULTRA-DRY Down protection makes the Spark an impressive hard-alpine or adventure racing sleeping bag, where down has never before been a viable option, and weight is simply not tolerated.
The Spark is cut as a close-fiitting mummy bag. The full hood, foot box and short zip maximise fit and warnth while keeping weight and bulk to a minimum.
Compressed volume*: 2.9 litres
Compression bag: 2XS - 3.3L to 1.3L
Fill weight: Bag weight: Length/zip options:
Regular 280g | 9.9oz 464g | 16.4oz left 1/3 length zip
Long 305g | 10.8oz 510g | 18oz left 1/3 length zip
Suggested use: Travel; Adventure racing; Summer cycle touring; Liner bag; Ultra lightweight hiking; Ultra lightweight alpine climbing
Season ratings: Summer/Spring/Autumn
Size: regular up to 183cm tall, chest circumference 146cm, hip 128cm and foot 88cm
Features: Contoured mummy; 10D Pertex Quantum shell for minimal weight and bulk; sewn through lateral baffles for optimal weight/bulk/warmth ratio; 55/45 fill ratio; contoured hood with drawcord; tapered footbox; 1/3 length YKK #3 side zip; includes lightweight 15D Ultra-Sil compression bag, mesh storage cell and laundry bag.
Down: ULTRA-DRY Down 850+ Loft 90/10 European Goose Down
Suggested use: Travel; Adventure racing; Summer cycle touring; Liner bag; Ultra lightweight hiking;Ultra lightweight alpine climbing
In a world of technical brilliance it is remarkable that the performance of certain natural products have not been surpassed. Despite advances in modern fibre technology, down is still the best insulator warmth for weight, and is also the most durable sleeping bag insulation.
The problem with down is its vulnerability to water; moisture decreases the ability of the down to loft to its full potential and insulate, decreasing the warmth of your sleeping bag. Once down is damp or wet, it also takes a long time for it to dry out and effectively insulate again.
With the introduction of water-repellent ULTRA-DRY Down we have virtually eliminated the negative effects that moisture has on down. The ULTRA-DRY Down water-repellent treatment protects the down from external moisture and internal condensation.
ULTRA-DRY Down is a permanent* Nano-level water repellent polymer treatment applied to our high loft, high quality down. The Nano-thin treatment vastly improves our 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.
Sea to Summit sleeping bags, using ULTRA-DRY Down in combination with our already formidable 2D- and 3D-NanoShell system give you the best chance of sleeping warm and dry, day in day out throughout the worst of conditions.
With these technologies combined there is simply no reason to choose any other insulation or shell for your sleeping bag.
*No loss of treatment effect has been seen in over 14 wash cycles.
Loft is the volume for a given weight of down. It is used to describe the quality of down, relating directly to the insulating performance. High loft down is warmer for a given weight than low loft down. Higher lofting down will fill a larger volume of space for a given weight. As a result, less down weight is required to fill each baffle in a sleeping bag. This translates to a lighter sleeping bag. The most common measure of loft is called Fill Power. 850 Fill Power implies that one ounce of this down will loft to fill a volume of 850in3.
850+ Loft Goose Down
850+ Fill Power (Loft) Goose Down is the very best quality down available for sleeping bags. It provides the highest insulation for its weight and will last the longest. Sea to Summit 850+ Loft series bags are all filled with Eastern European Mother Goose 850+ loft down. Eastern European Goose Down is well renowned for its high quality, achieving the best loft, with the largest clusters that are strong and resilient, lasting for years.
All Sea to Summit sleeping bags are sold with an International Down Feather Laboratory (IDFL) certificate that identifies the exact Fill Power of the down used. We guarantee our sleeping bags are filled with premium down that exceeds the stated Fill Power in accordance to the International Down Feather Bureau (IDFB) standard.
EN13537 is a European standard for sleeping bag temperature ratings. Everyone sleeps differently; some people are very warm sleepers while others feel the cold easily. There are many factors that affect your warmth and comfort in a sleeping bag. An important factor is that you use a good insulating mat, so your body heat isn t drawn into the cold ground you are sleeping on. Other factors include your tent or shelter, gender and metabolism, clothing, sleeping bag liner, use of the hood and your daily calorie intake.Although the EN13537 standard does not identify a single precise temperature a tested sleeping bag is suitable for, it does provide an industry standardised temperature range that a typical user can refer to as a guide for the conditions their bag will be most comfortable in.
The EN13537 standard provides three temperature levels to guide a consumer in their choice
Comfort - the temperature at which a standard woman can expect to sleep comfortably in a relaxed position. If you consider yourself a cold sleeper use this rating to decide the coldest temperature the sleeping bag is suitable for.
Lower Limit - the temperature at which a standard man can sleep for eight hours in a curled position without waking. If you consider yourself a warm sleeper you can use this rating to decide the coldest temperature the sleeping bag is suitable for.
Extreme - this is a survival only rating for a standard woman. Between the lower limit and the extreme rating a strong sensation of cold has to be expected and there is a risk of health damage due to hypothermia. This is an extreme survival rating only, we do not recommend you rely on this rating for general use.
Our goal is to create such cool and useful gear that it motivates and inspires people to travel and lead an active, outdoor lifestyle. Every piece of gear is made to make you want to take it outside or travel with it, to make your trip lighter, to be more organised, more comfortable, more carefree so that no matter what the conditions, you can revel in being out there experiencing our wonderful planet.
Sea to Summit Spark 2: ultralight down sleeping baBy: Peter MacLeod on 11 September 2017Great bag for what it is - ultralight. Down filling is minimal, zipper is short and materials are super lightweight. For a bag in it's temp rating and weight, I would be surprised if there is a better option. I can't fault it. There are obvious design tradeoffs to achieve a weight savings of more than 0.5kg compared to other options, but great quality materials and workmanship make it a great choice if you need a super-light bag in this temp rating.
Revew of Sea To Summit Spark SP2 Ultralight GooseBy: Sophia on 20 December 2016Wonderful! Just what I have been waiting for a long time. I am a small person and can't carry heavy pack. This super light warm sleep bag will take me to many hiking trips I like. Will find the durability in coming trips. I am sure it will be fine if I look after it well. I also bought a Big Anger Fly Creek ultra light 1 person tent from Wildearth. Hope I will find a super light backpack soon. The customer service is very good. The products were delivered on time and well packed. Also had been well informed of the order delivery. I had missed one guy-line of my tent. I rang the customer service after few months( wasn't used until then). A pack of guy-line arrived to me by express very quickly. Very impressed.
Sea to Summit Spark SP11 sleeping bag reviewBy: Inia Raumati on 24 April 2016So far this sleeping bag has been awesome. Very light, very warm and packs down to next to nothing, which is really important for what I have planned. I will be using it in the 4Deserts Namibia Race in May, where you have to carry all your gear (food, clothes, sleeping bag etc) for 7 days of self supported racing. For this weight and size is key and this bag meets all the requirements. I will have more idea post race but at the moment it looks good as a more than adequate size for me 1.73m around 77kg. If it goes really well, its rating may go up in my books, happy trails
Sea to Summit Spark 2 Review.By: Austin Desi on 10 August 2015This sleeping bag is the ultimate light weight sleeping bag for me. I'm an adventure paraglider pilot and weight/warmth are very important aspects to choosing equipment for adventures. Very happy with this product. The weight is lighter than advertised!