ProMaster Professional Rugged Memory Cards are designed to keep your memories safe! Their world-proof, 1-piece, molded design is the result of a unique manufacturing process making the cards up to 3 times stronger than normal memory cards. Industrial grade internal components offer maximum protection against water, high humidity, extreme heat & cold, and impact. The LOCK switch typically found on standard SD cards has been removed to offer additional protection against physical failure. Rugged SD cards are molded in a unique red color that easy to spot if dropped or lost.