STURDY STRUCTION: 67'' large cat tree adopts CARB-certified P2-grade particle board and a 0.6'' thick strengthened base board, which makes cat tree more durable solid structure. Robust supporting posts add extra sturdiness. COMFY HOME FOR FUN: Multi-layer large cat tree is made of high-quality thick plush cloth (0.0007LBS/inch²), which is very soft and comfortable. Spacious apartments and comfortable swings，make your cat enjoy exploring and sniffing new homes, no longer scratching your furniture. SAFE DESIGN: All right angles of the board are designed to be rounded, which can effectively prevent people or cats from being injured and enhance safety. Prevent dumping design secures cat tree to the wall to avoid wobbling or tipping. SISAL-COVERED SCRATCHING POSTS: Big Cat tree's posts are coiled with natural sisal. Base are covered with sisal for cat to free their instinct. MODERN STYLE&EASY ASSEMBLY: Big cat tree is beautifully designed to fit all types of housing space. Whether you are in a dorm, apartment or house, cat trees can be perfectly integrated with furniture. Easy to install, Graphic explanation, 25 minutes to make your cat enjoy a comfortable new home.