We use this all the time while he is on his play Mat. He doesnt care if his head is in it. He is wiggly at 4 months and will sometimes wiggle his way out of it. Hes easy to clean when he spits up.
Super useful for babies and great comfort
FUE PARA REGALO TODO BIEN
Great quality, but didnt end up using it as much as I thought! I was so worried about my babys flat spot l, but we rarely used this and the flat spot corrected on its own over time and as he started sitting on his own.