Autism-Friendly Sensory 3 Piece Large Montessori Gonge Hilltops | Stepping Stones | PastelsThe Gonge Nordic Hilltops come in three different heights that will inspire children of all ages to jump from hilltop to hilltop. Hilltops develop a child's ability to estimate distances and make them familiar with varying heights. Each top is provided with a rubber rim which prevent them from slipping and protect the floor. Hilltops are made so that they can not overturn. Key Features Made from child safe durable PP plastic. Each top is provided with