A clean educational infographic explaining why a down jacket keeps you warm, in a friendly flat illustration style on a warm cream background. A large bold dark-navy title at the top reads WHY DOWN KEEPS YOU WARM. Below, four rounded cards connected by small orange arrows flow left to right: the first card shows fluffy white down clusters trapping tiny pockets of still air, labeled TRAPPED AIR; the second card shows a magnified down feather with a wavy heat arrow bouncing back, labeled LOW HEAT FLOW; the third card shows a tall fluffy down layer beside a flat thin layer, labeled HIGH LOFT, MORE WARMTH; the fourth card shows a windproof shell blocking blue wind arrows while a warm orange glow stays inside, labeled WINDPROOF SHELL. At the bottom left, a small cozy illustration of a person in a puffy down jacket walking through falling snow. Soft navy, sky blue and warm orange palette, short clean labels only, simple icons, generous white space, no long paragraphs, no logos, no watermark. Landscape 4:3 layout, title across the top, four cards in one row, person illustration at the lower left.