1. Transparent Hard Shell — German Bayer Makrolon® polycarbonate. 9H hardness, anti-yellowing coating, anti-fingerprint nano-layer. Lets your iPhone 18's titanium show through.
2. Liquid Silicone Bumper — 80 Shore soft TPU with internal air-pocket corners. Absorbs shock, stays grippy, never sticky. Easy to clean, never peels.