The Sony HF 90 Normal Bias High Fidelity Audio Cassette Tape 5 pack is a set of high-quality audio cassette tapes designed for recording music or other sounds. With a capacity of 90 minutes per tape, these Sony cassette tapes are recordable and come in a standard jewel case packaging. Perfect for anyone looking to create their own mixtapes or preserve special audio recordings, this set of five Sony cassette tapes offers a reliable and high-fidelity listening experience.