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Diadem Extreme Mat

Diadem Extreme Mat

Item Number  00-0000003566

A warm, packable, inflating, 4-season sleeping mat.



Green pale frog
The Diadem Extreme Mat is a warm, packable and comfortable thermal sleeping mat built for 4-season use and a good night’s sleep on cold ground. We designed it to offer an effective warmth-to-weight ratio for mountaineering, alpine trekking and expedition use all year round. It weighs just 540 grams, measures 183x56 centimetres, and is 6 centimetres thick. It has an insulation rating (R-value) of 4. All this in a mat that packs down to the size of your climbing harness!

This inflating, insulating mattress has a high-quality, 2-way valve for easy inflation and fast deflation. Its tough, durable main material has a robust 30-Denier ripstop construction. What’s more, it uses an internal layer that features a heat-reflective technology to reflect heat emitted by the body for enhanced warmth. And the base is covered in anti-slip material to prevent slipping during the night, so that you sleep and rest more comfortably without cold ground stealing your body heat.

The clever stuff sack doubles up to become a breath-saving pump sack. And in case of emergency, a field repair kit is included.

The Diadem Extreme is our warm, inflating, 4-season insulated sleeping mat.

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Mountaineering Trekking
Recommended for
Mountaineering Trekking
Packing Size
Ø12x24 cm
R-value (insulation)
183x56x6 cm
540 g
Item Number
  • Ripstop fabrics
  • 4-season usage
  • Compact stuff sack included
  • Safety lock valve
  • Two-ways inflating valve
  • Integrated pump sack
  • Anti-slip bottom
  • Heat Reflective Technology
  • Inflating
Material & Care
30D Ripstop brushed Poly with TPU lamination, 75D non-slip Poly with TPU lamination, Heat reflective Mylar® lining
Shipping & Returns
Delivery & tracking
Delivery and tracking will start as soon as you receive an email with the shipping confirmation. Order processing can take 24-36 hours.

- Shipments to Italy are delivered within 2/3 business days.

- Shipments to the European Union take approximately 4/5 business days.
To return a product, you have to complete the procedure within 30 days of purchase.
- All returned products must be in perfect saleable condition.
- Returned products must be unworn, unwashed and unaltered.
- Returned products must have all the original tags and labels and be in their original and integral packaging.

Check the Returns page in the Help Area here.
Diadem Extreme Mat
Diadem Extreme Mat
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    • Green pale frog
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