These cases are made from a mix of materials, most commonly silicone and TPU (thermoplastic polyurethane), plus plastic/polycarbonate and leather.
Common attachment options include carabiners, keychains, and lanyards so you can clip the case to a bag, belt loop, or keys.
Many listings note a 1 Year Limited Warranty as part of the product details.
Many protective covers support both wired and wireless charging without removal; one listing specifically mentions Qi‑compatible wireless charging mats and using the charging connector when away from a mat.