Mertra Heat Reactive Puffer (Coal)

The Mertra Heat Reactive Puffer (Coal) has been engineered for bold winter styling with advanced performance details. A durable polyester shell with a polyurethane coating has been applied to enhance water resistance and long-lasting wear. Inside, soft down-cotton filling has been used to deliver reliable warmth while maintaining a lightweight feel.

A heat-sensitive colour-changing effect has been integrated into the design, allowing the jacket to react visually to body heat and temperature changes. High-frequency 3D logos have been placed on both the chest and back, giving the puffer a premium and modern finish.

Functionality has been improved with a secure lining zip pocket, providing safe storage for essentials. Adjustable hood toggles and waist toggles have been added to allow a customised fit, while wrist velcro tighteners have been included to block out cold air. The Mertra Heat Reactive Puffer (Coal) is designed as a statement outerwear piece that combines innovation, comfort, and street-ready style.