The Mertra Heat Reactive Puffers bring next-generation innovation with a color-changing, heat-sensitive shell that transforms instantly on contact. Designed for extreme comfort and visual impact, the puffer features premium down-cotton fill for warmth, a high-frequency 3D Mertra logo, and upgraded hood toggles for improved adjustability. With dual lining zip pockets and velcro tightenings, the combines functionality with futuristic streetwear design Perfect for winter conditions, urban wear, and performance layering, this is Mertra standout piece from the .
