Mockup porte-clés blanc avec sac à dos ficelle personnalisable

Photo-real product mockup of a white keychain with "sac à dos ficelle personnalisable" logo printed at wrap-around. Mockup style: on model wearing, vibrant gradient 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): "sac à dos ficelle personnalisable" (fr).