Expand your chicken s space with this ECOFLEX Chicken Pen. Can be attached to the Fontana Chicken Barn (sold separately) or used as a stand alone. Mesh and predator resistant latches made of stainless steel. Frame is made from ECOFLEX. ECOFLEX is a proprietary formula that incorporates reclaimed wood and plastic into the material that allows the product to be eco-friendly and a great value as it will outlast most other products. ECOFLEX is 100% non toxic and does not absorb moisture. There is nothing in ECOFLEX that could harm your pets. Easy no tools assembly. 10 year limited manufacturer s warranty.