These are Disney Parks The Muppets "Chained" Animal Socks, originally sold at Disney theme parks around 2020. The socks feature the wild drummer Animal from The Muppets, complete with his signature spiked collar and chains.

Product Specifications

Design: Features a detailed graphic of Animal’s face at the top, a grey spiked collar, and three grey chain links running down the red body of the sock.

Material: Typically composed of 98% Polyester and 2% Spandex for a soft, stretchy fit.

Sizing: Most listings indicate a "One Size Fits Most" unisex fit, generally corresponding to adult sock sizes 10–13 or shoe sizes 8–12.