For fast and light trips where don’t want to compromise on warmth, the Spark Sp3 will keep you comfortable while you sleep without the extra bulk.
The Sp3 features an expedition mummy shape to accommodate extra layers and to give you extra room to move. This bag has a 10D nylon shell and 7D lining to keep the weight to a minimum. For insulation, it’s filled with RDS certified 850 Loft Premium
For easy access and ventilation, it has has a full side zip with two sliders, while the zipper draft tube, front neck draft collar and hood help trap warmth to keep you comfy. This bag has a full box baffle construction to minimise cold spots, and vertical baffles on the chest to prevent the down moving around.
The Spark Sp3 from Sea to Summit offers a reliable sleeping solution that’s compact, lightweight but with enough warmth for your minimalist adventures in cooler conditions.
What would the comfort rating be if I used a spark III sleeping bag with a spark liner.
G'day Tim,
The comfort rating when adding a sleeping bag liner would depend on the liner used. The Thermolite Reactor Compact adds up to 11°C warmth, the Thermolite Reactor Extreme adds up to 15°C and the Thermolite Reactor Fleece Liner adds the most warmth up to 18°C. You would add one of these amounts to the comfort rating of the Spark 3 for the approximate total rating.
Can you confirm the length of the zipper for the regular length bag. The pictures seem to show different length zippers. Thanks
Hi team. Would you recommend the sp2 or sp3 as a single sleeping bag (with ether light insulated mat) for most Aussie thru hiking e.g Tassie, larapinta, Bibb tracks etc?
G'day Mike,
We'd recommend the Spark III. Generally, you should look at a sleeping bag that has a comfort temp of around 5ºc lower than the lower temps you expect to be in, or possibly 10ºc lower in you're a cold sleeper. Eg. I'm a cold sleeper, I need a -10ºc bag which I use for all trips, year round.
The Spark 3 also has a longer zip down the side, so there is the option of opening it us and using it like a quilt for the more warmer trips.
Might also be worth reading through the product reviews on the Spark III to gauge real life use and comfort temps. Even though everyones bodies are different, theres some great feedback there.
Hi Team just wondering what is the difference between the two series? Comparing the Flm3 and Spk3 there seems to be slight differences in dimensions but that's it? I'm sure there has to be something else I'm missing otherwise why make two separate series?
It comes down to gender, Meaghan.
The Flame series are made with a women's shape in mind i.e wider hips and narrower shoulders, whereas the Spark are generic or unisex in shape. The Flame series also have a little extra down to make them warmer to make up for the fact that in general females sleep colder.
That being said, if the Spark feels more comfortable or suits your dimensions then that's a better choice.
I hope that helps.
What is the width of the internal foot region - is it too tight for someone who is 180cm tall?
G'day David,
The internal foot girth is 94cm, so width wise it will be a little less than half of that. Height wise the Spark SP3 is designed for max user height of 183cm, however, if you check out our video Ben has jumped in it and has a little bit of room to play with, he is 185cm, so I would say you'll be ok with the regular length.
Is the external fabric a technical fabric e.g pertex quantum? or does it have any type of DWR? I cant find any info on this anywhere. Cheers
G'day Matthew,
The external shell of the Spark SP3 is a high-performance 10D nylon with no DWR. The down itself is RDS 850 Loft Premium Goose ULTRA-DRY Down™ so will repell external moisture and condensation
will i get very claustrophobic in this
G'day Riley,
The Spark SP3 is referred to as an expedition mummy style bag. This will give you slightly more room than a full mummy style, but if you're not comfortable in a tight-fitting sleeping bag it might cause you some anxiety. You would likely be better with one of the Trek range, they have a little more space and a foot zipper to open out the bottom if you need.
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