“A Study of Self-Expression.” Explore the Rational Rush collection at CasePoppi. This series blends the nostalgic charm of Y2K aesthetics with the delicate whimsy of coquette-core. Featuring our signature vintage puppy and bunny illustrations, soft ribbons, and celestial star patterns, these cases are more than just protection—they are a canvas for your personality. Whether you're vibing with baby blue or soft pink, find the perfect accessory to match your daily aesthetic.