Guinea Pig Friendly Playpen: The soft rounded edges and burr-free Connectors let you know that Midlee designed these playpens to protect your Guinea Pig’s feet, skin and teeth (even with chewing piglets); Plus Endless Option 12-Grid System (each panel 13.5" x 13.5"): Piglet parents report that they’ve become obsessed with playpen possibilities, from ramps and compartments, to fun maze designs - with 12 fence grids per set, and rugged snap Connectors Roomy Guinea Pig Run: Cages are confining, so create a big play space in minutes, with plenty of room for food bowls, water bottles, toys, huts and even litter and bedding - just place your piglet inside their roomy run and smile as your little one Multi-Pet Playpen: It’s nice to know that you can add more playpen space as your herd grows, in fact, pet parents with multiple piglets, mixed pairs, or those introducing new pets say that they are able to stop the bickering-with territorial guineas Problem Solving Fence: As you check out the pictures, notice the how snap connectors and panel style Guinea Pig cage panels lock solidly in place; In fact, many customers use their panels to build custom solutions Set of 12 panels. 13.5" x 13.5" each. The soft rounded edges and burr-free connectors let you know that Midlee designed these playpens to protect your Guinea Pig's feet, skin, and teeth (even with chewing Guinea Pigs). Cages are confining, so create a big play space in minutes, with plenty of room for food bowls, water bottles, toys, huts and even litter and bedding - just place your Guinea Pigs inside their roomy run and smile as your little one.