That is why we bought it for our short because he goes into the forest kindergarten and you can get stuck with doing it everywhere. It is water-repellent and keeps the cold thoroughly. By the Velcro keeps it already folded and does not go by themselves apart. While it is not as robust as other seat cushion foam, similar to the material of mattresses, but that makes it nunmal less Platzbenötigend and it is also cheaper. Our old was now 1.5 years long every day in use and only now we decided once again a new procure because it is yet so slowly dissolve something. ;-) For the price this is more than expected. So who does not want to sit for more than 30-40 minutes at a time on a frozen stone, this can buy calmed. For tougher applications should be stable with neat foam pad zulegen.Das is then additionally convenient. But since it priced and the benefits forth sufficient for our application completely full marks there.