JOEOR Flea and Tick Collar for Dogs - 8 Months Continuous Flea Prevention Collar for Dogs - One Size Fits All - Easily Adjustable and Waterproof Design - Advanced Natural Flea and Tick Control Collar Folds and unfolds easily for quick setup Panels can be separated for configuration as needed. Light and compact when folded for easy storage. Rigid and durable when unfolded for safe and escape-free playtime. Assembles quickly and easily with no tools! Playpen measures 24" x 24"