Do not roll the

Contrary to what is written, do not drive (even in the right direction as shown); gondolera the upper layer even if the rolling diameter is large (about 6 to 7 cm in my case). Certe, it will resume its original shape after some time but in the meantime is to annoy maniper on waves (according to my son for whom this product was purchased).
Similarly, prefer a larger model, size cde it are a bit limits.