This was copied from their website: "Our cases are a combination of poly-carbonate, hard plastic for structural rigidity, and TPU rubber for impact resistance." Polycarbonate is used for things such as football helmets, CD/DVDs, and medical devices. TPU is an abbreviation for thermoplastic polyurethane: none of the TPU material I used in mfg contained latex. Here is a link to the Wikipedia description of the typical formulations: https://en.wikipedia.org/wiki/Thermoplastic_polyurethane.