Thera Pillow 2.0 includes a USB-C charging cable. Its current package list does not include a wall adapter. Charge the pillow using a compatible 2A power adapter; a full charge takes about 4.5 hours.
The original Thera Pillow 1.0 product page also lists a USB-C cable. If you need to confirm which accessories came with your specific order, check the model and packing list or contact our team in this conversation.