Textile RFID labels are identification carriers built around a microchip and a radio antenna, sewn, heat sealed or attached to a garment, storing a unique identifier (EPC) that can be read at distance with no contact and no line of sight. This guide covers their construction, how they work and how they differ from barcodes and conventional EAS tags, then compares the available formats (heat seal, sew in, woven, adhesive, hangtag) and the HF, UHF and NFC frequencies by use case. It also details the measured benefits for apparel retail (inventory accuracy, replenishment, shrinkage control), field use cases from leading brands, combined RFID + EAS protection, selection criteria and the printer, reader and software ecosystem required to deploy.