Our clear comes equipped with four ultra-strong, weatherproof suction cups that provide a secure hold, even in extreme weather conditions Suction cup window features a removable tray slide out the tray to fill with your favorite seed, and slide back in. It's so -friendly, even the elderly and young children can do it The small drainage holes at the bottom of our window allow for proper water drainage and dust filtration, keeping your birdseed dry and . Whether teaching your child about nature and birds, keeping your feline friend entertained, helping your elderly loved ones find peace, or looking for a unique gift for bird lovers. size: 21.5 x 20.5 x 10cm Material: Acrylic colour: Transparent Package Contents: 1 x Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.