The product is a Breyer Horse Trailer made of plastic, designed for Breyer model horses and other toy horse brands like Just Play and Schleich. It can be used to transport toy horses and playsets, adding an extra dimension to imaginative play scenarios. This accessory is compatible with dolls and other accessories, providing a complete play experience for children who enjoy collecting and playing with model horses. Last 4 pictured are Breyer. Others are Just Play, unmarked, Schleich. Trailer is Breyer. Dolls are not. Some of the horses need a good cleaning. One is missing a tail, see pics.
eBay