The 4F men’s trekking down jacket is a lightweight, insulated model designed for mountain hiking, trekking and outdoor activities in cold conditions. The use of PrimaLoft Silver synthetic insulation and zoned PrimaLoft Black fill provides effective thermal insulation even in damp environments. The regular fit and standard length ensure a comfortable fit, while the compact construction makes it easy to pack the jacket into a backpack.

The outer material is made of 100% polyamide, combining low weight with resistance to everyday use. The main lining is also made of 100% polyamide, while the second lining contains 86% polyester and 14% elastane. PrimaLoft Silver insulation helps reduce heat loss while maintaining low weight and good compressibility. Zoned PrimaLoft Black insulation additionally supports thermal protection in areas particularly prone to cooling. Both types of fill are made of 100% polyester, while the quilted lining construction supports even distribution of the insulation.

The outer layer of the jacket features a hydrophobic DWR treatment that limits moisture absorption and helps water droplets run off the material’s surface. The finish provides additional protection during light, passing showers, but does not replace a waterproof membrane. PrimaLoft synthetic insulation retains its insulating properties in damp conditions, increasing the jacket’s functionality during changing weather on the trail.

The integrated hood with depth adjustment allows the head coverage to be customised, while the cuffs finished with elasticated binding help limit the entry of cold air. The adjustable hem with cord locks allows the jacket circumference to be adjusted and helps reduce heat loss. The model fastens with a zip and features three zipped external pockets – two side pockets and one chest pocket – as well as internal pockets for small items.

A major advantage of the model is the ability to pack the jacket into its own pocket, so it takes up little space in luggage and can serve as an additional insulating layer during an outing. Reflective elements improve the wearer’s visibility in low-light conditions. The combination of a lightweight construction, advanced synthetic insulation and functional adjustment features makes the 4F jacket a practical choice for trekking, mountain trips and outdoor activities on cooler days.

KEY FEATURES

• Brand: 4F
• Type: men’s trekking down jacket with synthetic fill
• Main material: 100% polyamide
• Lining: 100% polyamide
• Lining 2: 86% polyester, 14% elastane
• Fill: 100% polyester – PrimaLoft Silver
• Fill 2: 100% polyester – PrimaLoft Black
• PrimaLoft Silver: lightweight, compressible thermal insulation that is also effective in damp conditions
• PrimaLoft Black: zoned insulation supporting protection against the cold
• DWR treatment: limits the absorption of moisture by the outer material
• Construction: lightweight, quilted, easy to pack
• Fit: regular
• Length: standard
• Hood: integrated, with depth adjustment
• Fastening: zip
• External pockets: 2 side pockets and 1 chest pocket, with zips
• Internal pockets: additional space for small items
• Cuffs: finished with elasticated binding
• Jacket hem: adjustable with a drawcord and cord locks
• Packability: can be folded into its own pocket
• Reflective elements: improve visibility in low-light conditions
• Protection from precipitation: light, passing showers
• Intended use: trekking, mountain hiking and outdoor activities in cold conditions