Non-slip sheets that were placed under a children's play mat. I am selling them because I no longer need them. They were all used for that purpose, and I think they are clean because they were not used in the kitchen, etc. 120cm x 60cm 3 sheets 60cm x 45cm 2 sheets Scraps 2 sheets You can put them under a rug, and they provide some cushioning, which I think also helps with soundproofing for children. They can also be placed under furniture to prevent scratches.