the selection of natural solid wood branches as raw materials,All the trunks are unique, all of them are made of natural fruit wood polished,wrapped in natural sisal,more durable than ordinary cat scratching post on the market,solid wood support better. Cute cat tree wrapped around the soft fabric,touch more comfortable, sleep more at ease.Inside the cat house there is a mat that can be used on both sides,warm in winter and cool in summer.All materials have been strictly screened,environmental protection grade E1,safe and stable,the choice of pet supplies can not be sloppy!