The injury accident (broken, cutting, finger nail missing and deformity)for finger and wrist of children by the door often happens because of lack of children's attention, so it is hard to prohibit the injury accident of children just with the attention and instruction. This patent is designed that the finger shall not get into the chink of door in the condition of opened door. It is designed to absorb the impact, as inserting of air in this product, in case that the children hold the edge of door then close the door, Therefore it will protect the children from the injuring accident by the door in advance. If you are interested in our product, pls contact us.