100% Nature--Provide cats with handmade chew sticks and fruit galls from natural silver vine plants, with no additives. Silvervine contains six active ingredients similar to nepetalactone, that have an apparently euphoric effect on cats, making cats relax, release stress, and keep cats healthy.Make Cats Happy: Silvervine and gall fruit contain Actinidine and Nepetalactone, which are attractive to cats and can help cats relieve stress, get lounging them up and moving in promoting exerciseCat Teething: The natural sisal rope and are bite resistant and help cats clean teeth, eliminate plaque and tartar, improve oral , and keep breathEasy to Use: Feed your cats directly. Your cats will get excited with amusing and funny behaviors: chewing, rubbing, licking, running, rolling, mewing, droolingCat's Favorite--Silver Vine has a strong attraction to cats, cats respond to silvervine by sniffing, licking, and biting it, shaking their head, and rubbing their head, chin, or cheeks against it. With these behaviors, the cat's stress can be released, and half an hour later, the cat will return to normal.color:BrownMaterial:Grasssize:20cmPackage Contents:4 x Cat Catnip Ball ToyOnly 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.