Cozy socks to wear when enjoying a cozy cuppa! These adorable Sock In A Mug sets are available in 4 designs, featuring Pusheen and her little sister Stormy in various poses and guises, to make your tea break time all snug and warm. A perfect gift idea or treat for any Pusheen fan! Mug Capacity: 250 ml. Mug material: Ceramic. Suitable for microwave and dishwasher use. Sock material: 70% Cotton, 25% Polyamide, 5% Polyester/Spandex. Sock size: UK 5-11, EU 37-45, US 5.5-11.5.