Synthetic Insulation
Synthetic insulation is basically polyester threading that is moulded into long single threads or short staples to mimic lofty down clusters. Thinner and lighter threads fill voids and trap warm air more effectively, while thicker strands sustain the loft and durability.
There are advantages and disadvantages regarding synthetic insulation:
Synthetic insulation is great, because:
- It is water resistant and provides insulation even when wet
- It dries quickly, actually in a matter of minutes in direct sunlight
- Synthetic is generally less expensive than down
- Most synthetic fill sleeping bags are machine washable and dryable
- It is completely hypoallergenic
- Is available in a greater range of options for different budgets
But there are downsides, too:
- Synthetic insulation can be bulky
- It is heavier than down
- Synthetic fibres gradually break down over time
- Some less-expensive synthetic fills can be stiffer than down and cause comfort problems
Continuous technological advancements in synthetic materials will change the fact that synthetic insulation is still the runner-up behind down insulation.
Different Synthetic Materials
Micro Fibre
Micro fibre mimics down extremely well and will store plenty of air for great insulation. It has a soft touch and can be compressed easily.
4-Hole Fibre
This slightly stronger fibre is very robust, which guarantees a long lifespan of the fill and durable stability, even after compressing the bag several times.
7-Hole Fibre
A 7-hole fibre is even more durable and of higher quality than the 4-hole fibre.
Spiral-wound Hollow Fibre
This fibre has the shape of a feather; it allows the micro fibres to link optimally, which generates additional loft.
