![[Fall/Winter 2025] Down? Synthetic? Fleece? The key to comfortable layering is choosing the right material. The best mid-layers for mountaineering (cold weather gear) by type, and tips for choosing the right one.](https://outdoorgearzine.com/wp-content/uploads/midlayer_best.jpg "[Fall/Winter 2025] Down? Synthetic? Fleece? The key to comfortable layering is choosing the right material. The best mid-layers for mountaineering (cold weather gear) by type, and tips for choosing the right one.")
[Fall/Winter 2025] Down? Synthetic? Fleece? The key to comfortable layering is choosing the right material. The best mid-layers for mountaineering (cold weather gear) by type, and tips for choosing the right one.
Down , fleece , insulation , NORRONA , Rab , THE NORTH FACE , mountaineering guide , how to choose , recommendations , Patagonia , mid-layer
Written by Yasushi Hisatomi
![Patagonia R1 Air Jacket Review: The perfect balance of breathability and warmth for active outdoor activities and autumn/winter mountain climbing. The latest in lightweight, warm, and breathable fleece. [Hands-on Review]](https://outdoorgearzine.com/wp-content/uploads/DSC04594-1.jpg "Patagonia R1 Air Jacket Review: The perfect balance of breathability and warmth for active outdoor activities and autumn/winter mountain climbing. The latest in lightweight, warm, and breathable fleece. [Hands-on Review]")
![Patagonia's new technical fleece "R1 Thermal Full Zip Hoodie" has become too addicted to the mid-layer of tough snowy mountain climbing [Practical Review]](https://outdoorgearzine.com/wp-content/uploads/PXL_20241125_005014665.jpg "Patagonia's new technical fleece "R1 Thermal Full Zip Hoodie" has become too addicted to the mid-layer of tough snowy mountain climbing [Practical Review]")
![[Practical Review] SALOMON Radiant Full Zip Mid & Tradition Full Zip Mid A high-value fleece packed with features required for winter mid-wearing.](https://outdoorgearzine.com/wp-content/uploads/DSC06216.jpg "[Practical Review] SALOMON Radiant Full Zip Mid & Tradition Full Zip Mid A high-value fleece packed with features required for winter mid-wearing.")
