The main fabric of the olfactory bulb is environmentally friendly Polar Fleece, which is soft and skin-friendly, environmentally friendly, and supports machine washing. The olfactory bulb is an upgraded version of the traditional olfactory pad. It is more difficult for dogs to get food. Therefore, the dog gets used to smelling the ball for the first time and puts food on the ball. It's easy to find an easy place for dogs. It has been hidden in the ball, and food can be put into the ball, which moderately increases the difficulty of dog food. Sniff the balls from many folded circles, there are many deep collections, and the owner can hide food between the fabrics to encourage your pet to smell them. The difficulty of foraging, the dog is looking for food roots according to the smell, while eating the ball. Easy to store, small in size, the smaller the ball, the more concealed, the harder it is. It is an excellent concentrated toy. Specification: Material:Polar Fleece Color:Orange Green Yellow White, White Red Green, Red Yellow Orange, Orange Green Yellow, Rainbow Color, Beige Green Avocado Color, Noble Purple Size: Approx. 15 cm/5.91 inchesType1 Size: Approx. 20 cm/7.87 inchesType2 Package Includes: 1 x Dog Snuffle Ball note: 1.Please allow 0-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Other parts are not included.