My husband has tried various other brands of socks ,none of which
remotely resembled the L/XL I chose for him.
He finds Posey socks comfortable and true to advertised sizing.

Seat Belt to Suit the Princess Deluxe Bed Chair
This seat belt is designed specifically for use with the Princess Deluxe Chair to help keep the user safely and comfortably seated. Ideal for added positioning support in aged care or disability care, it attaches securely to the chair frame and is easy to adjust or remove as needed. A practical safety accessory for everyday use.