Salewa Diadem Extreme inflatable mattress 2025

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

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

Particularities
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.

Features

• 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
• Use: Mountaineering and trekking
• Size_Mats: 183x56x6 cm
• R-value (insulation): 4
• Producer's weight: 540 g