This product is a simple, modern modular type pet house made of eco-friendly material, EPP (Expanded Polypropylene). EPP is strong against contamination and is harmless to the human body, so it is suitable for pets and baby goods. It is a modular type that can be inserted like a block to make a house. Depending on the number of modules, the house can be longer and it can be used as a play space for babies when needed. It looks solid and firm like a concrete block but the material is light and soft with elasticity. It is designed so that the user can feel the strength of the material. The main body is made of warm gray colored EPP material giving off a warm feeling with a vividly colored cushion which projects a simple, modern, and cute feeling. It is designed to fit in any space.