SIN 4645 is a wooden house that, due to their small sizes, are perfect for guinea pigs. Designed with a flat roof and front entrance, it has a nice shape and it is decorated with graceful holes that also facilitate air circulation. SIN 4645, which is part of the SIN range for small animals, is built with respect for the environment, made using FSC™ certified wood, that is sourced from forests that are managed correctly and responsibly according to strict environmental, social and economic standards and other controlled sources.