**Product Description:** Inspired by WELIGHT’s carbon-fiber propellant tank, this plush keychain transforms a distinctive aerospace structure into a more playful and approachable character. The design retains the tank’s rounded, horizontally elongated form while incorporating a cheerful expression and soft tactile finish, creating a unique contrast between aerospace engineering and charming cultural merchandise. Equipped with a WELIGHT-branded strap and metal ring, it can be easily attached to backpacks, keys, or everyday accessories. More than a distinctive daily accessory, it brings the visual language of carbon-fiber aerospace technology into everyday life as a uniquely WELIGHT collectible.