White Laptop Sleeve Mockup for Promotional Materials

Photo-real product mockup of a white laptop sleeve with "promotional materials" logo printed at wrap-around. Mockup style: warehouse / industrial, tech blue logo palette. Studio-grade photography, sharp focus, natural fabric texture / mug ceramic / paper grain. Magazine-quality merch shot, no watermarks. Logo is generic placeholder typography — no real-brand marks. Realistic product proportions. Target search intent (rendered visually, no on-image text): "promotional materials" (en).