This design aim is improving a better living environment for a small apartment, specially for a young family who have the baby, their little sitting room space is becoming the child's entertainment space, thus many furnitures looks very messy and crowd . this design can be achieved by clever structures that become a popular climb mat for your children who like any activities on it. There are two layer structure, a hard layer and soft layer can reduce pain when children climbing on a traditional climbing pad and it also can become a tatami mat,allowed a 1.8 m people use enough, in the modern household environment, it's practical, reduce waste, save a space.