Food Grade Materials The raw materials used in the manufacturing of the hives are in agreement with food, and constitute a hygienic living space, preventing formation of bee diseases. Favorite of professional beekeepers: Inside is designed with a feeder, waterproof, moisture-proof, heat preservation Can support foraging in boxes during cold and hot periods Make your bees live longer and make honey sweeter Feature: Bee Friendly Plastic: The plastic insulated bee hives are made from food grade, UV-resistant plastic (HDPE). Package Contents : 2 Layer bee Plastic box (no any frames).