Description
Saphir Alu Thermique insoles — wool on top, aluminium below, for serious warmth
Cold feet are no fun at all, and for real winter chill the Saphir Alu Thermique is the insole I trust. It offers proper thermal protection through a clever two-layer design: 100% wool on top and a reflective aluminium layer underneath.
Your feet rest against the soft wool, which feels warm and comfortable, while the aluminium layer reflects your body heat back up and stops it escaping through the sole. It is ideal for extreme cold — think frosty mornings and long spells outdoors — and comes in sizes 36 to 46.
Why choose the Saphir Alu Thermique?
- Soft 100% wool top – your feet rest on a natural wool layer that feels warm, soft and comfortable from the first step.
- Reflective aluminium base – the aluminium layer reflects body heat back towards your feet and stops warmth escaping through the sole.
- Built for extreme cold – the twin-layer design makes these a genuine choice for frosty mornings and long spells outdoors in winter.
- Trusted Saphir quality – Saphir is a respected name in shoe care, and this thermal insole carries that same attention to detail.
- Wide size range – available from size 36 to 46 to suit boots and winter footwear for the whole family.
How to use the Saphir Alu Thermique
- Choose your usual shoe size from the range 36 to 46.
- Remove any loose insole already in your boot or winter shoe.
- Insert the Saphir Alu Thermique with the wool side facing up and the aluminium side down against the sole.
- Press it flat so it sits neatly from heel to toe.
- Team with warm socks on the coldest days for the ultimate in toasty feet.
Specifications
- Type: Thermal winter insole
- Material: 100% wool top layer with reflective aluminium base
- Best for: Extreme cold, boots and winter footwear
- Sizes: 36 to 46
- Contents: 1 pair
- Brand: Saphir
Frequently asked questions
How do the aluminium and wool layers work together?
The wool sits against your foot for soft, natural warmth, while the aluminium layer underneath reflects your body heat back up and blocks the cold rising through the sole. Together they make a genuinely warm insole for harsh weather.
Are these suitable for very cold weather?
Yes — they are designed for exactly that. The thermal two-layer construction makes them ideal for extreme cold, frosty mornings and long days spent outdoors.
Where can I buy Saphir Alu Thermique insoles in the UK?
You can order Saphir Alu Thermique insoles directly from Shoespecialist.co.uk. We offer free delivery on orders over £50, same-day dispatch when you order before 5pm, and a 60-day return policy — so you can try them in your own shoes with complete peace of mind.


















Hugo Hulshorst –
Does what they promise.
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J. M. Vogel (verified owner) –
Really good insoles
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S (verified owner) –
Does seem to work, but I need to try it for longer
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Bert Kalmeijer (verified owner) –
Size is right, nice warm wool on top and a levelling aluminium underside to the sole.
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