The phrase in question refers to attire designed for very young children, specifically babies, fashioned to resemble characters from a popular media franchise featuring colorful, empathetic bears. These outfits are typically worn during the annual autumnal celebration where individuals, particularly children, dress in costume.
Such garments offer opportunities for creative expression and participation in seasonal festivities. They allow families to engage in shared activities and provide infants with a comfortable and recognizable form of dress during potentially overwhelming social events. The characters often associated with the attire have a long history of promoting positive emotional development and well-being through media aimed at young audiences, thus adding a layer of familiarity and comfort for both the child and caregivers.