The Nerf Puzzle Feeder will keep your dog amused for hours on end! Treat your best friend by hiding their favorite snacks in the feeder and watch them play with their new favorite toy which will release treats for them to devour. Twist lid open & fill with treats, twist lid back on until you hear a click. Rotate up to any three settings by twisting center collar until you hear a click. Place slow feeder on the floor & let your dog have fun! Easy to clean, top rack dishwasher safe. Three adjustable settings. Approx size 12.5 cm diameter