It's a transparent tape that is commonly used for various purposes such as wrapping gifts, sticking papers together, or repairing minor items. The term "cello" in cello tape is derived from cellophane, a type of transparent film that was originally used in its production.

Cello tapes come in various widths and lengths, and they are typically made of a thin, transparent, and flexible material that allows it to be easily applied and removed. The adhesive on the tape allows it to stick to surfaces temporarily. It's a versatile tool for various household and office tasks.