4F Men's Dark Navy Blue Insulated Vest H4Z21 KUMP001 Size S

On a brisk autumn morning, you pull on the 4F men's vest in dark navy blue and head out for a trail walk. The synthetic insulation traps body heat while the breathable polyester shell keeps you from overheating, and the stand-up collar blocks the chill at your neck. Two zippered side pockets hold your phone and keys securely, while the full-length front zipper lets you adjust ventilation on the go. The regular fit layers easily over a hoodie or under a shell, and the subtle 4F logo on the chest adds a sporty touch. Lightweight and easy to care for, this vest is a practical choice for everyday wear, layering, or light outdoor activity.

Key specifications

• Brand: 4F
• Model: H4Z21 KUMP001
• MPN: H4Z21-KUMP001 30S
• EAN: 5903609550905
• Colour: Dark Navy Blue
• Size: S
• Gender: Men's
• Main material: 100% Polyester
• Lining: 100% Polyester
• Insulation: Synthetic (Polyester)
• Closure: Full-length zipper
• Pockets: 2 zippered side pockets
• Collar: Stand-up collar
• Fit: Regular fit
• Features: Lightweight, insulated, breathable
• Season: Fall/Winter 2021
• Care: Machine washable

Why choose it

The 4F vest combines warmth without bulk, making it a versatile mid-layer for fluctuating temperatures. The synthetic insulation retains heat even when damp, and the breathable fabric helps regulate moisture during active use. The stand-up collar and full zipper offer extra protection and easy temperature control, while the two zippered pockets keep essentials safe. Its regular fit allows comfortable layering over long sleeves or under a jacket, and the dark navy colour pairs well with most casual outfits.

Ideal use cases

• Everyday casual wear in cool weather
• Layering under a shell for hiking or commuting
• Light outdoor activities like walking or cycling
• Travel as a packable extra layer

Good to know

Machine washable for easy care; follow the label instructions. The vest is part of the 4F H4Z21 Fall/Winter collection and features a discreet logo on the chest. Available in size S; check the size chart for the best fit.