Castem releases Yomiuri Giants helmet-themed tin sake cup

Castem Co., Ltd., a precision casting manufacturer based in Fukuyama, Hiroshima, has developed a new tin sake cup (guinomi) modeled after the Yomiuri Giants baseball team helmet.

The product is designed to serve as both a functional sake vessel and a collectible item for fans. Made of 100% tin, the cup is intended to enhance the flavor of sake due to the material's thermal conductivity. It features a three-dimensional reproduction of the YG logo and includes a dedicated stand for stability.

The item is scheduled to go on sale on August 28, 2026, for 9,900 yen (including tax) through various online retailers and physical locations such as the meta mate store in Nihonbashi, Tokyo.