Ceruleanhome Soft Comfortable Cotton Ground Mat Pretty Cartoon Tiger Design Child Mattress Kids Playmat Crawling Mat SIZE-Thickness: 13mm. The largest size: 130x185cm(51"x73") Can be used as picnic mat, game mat, mattress and crawling mat. Back side is skid resistance design. Safer, more lightweight. Environmental protection and soft to skin with comfortable hand feeling. Pretty cartoon tiger design.