The bird feeder is made of high quality transparent acrylic so that you can study and appreciate the beauty of local birds. You can watch beautiful songbirds inches from your eyes. The acrylic transparent and durable is durable and can be used for long periods of time. This outdoor bird feeder is suitable for all windows and comes with 3 super suction cups. Unlike most window feeders for outdoor use, our heavy-duty suction cups allow the feeder to better adhere to the window. They are very durable and will not fall off from the wind or rain. Even if there are several birds eating at once, they may remain the same. Large feed capacity, easy to clean and refill. You can also quickly wipe the surface with a damp towel to remove any dust or watermark. Clearly see beautiful birds. Whether it’s for nature lovers or bird lovers, this feeder can be a gift for holidays, birthdays and housewarmings. Ideal for hanging decorations, tapestry or terrace decoration. Happy hour everyone can enjoy.