What age is this for? The only things that belong in a cot are a fitted sheet and a flat sheet, with the baby in a wrap and the flat sheet down the end so feet are at the end of the cot. That sounds really negative. The times my little girl has been vomiting are the times she needs more cuddles and comfort. How does that enforce a routine? We have a routine enforced by a quiet, struggle-free pattern where everything is calm and quiet. Of course, as mentioned, I had quite an easy baby, where others have not. But I've never heard of a baby being able to vomit or poo like that, or anyone at any age really being able to make themself except with an eating disorder sticking fingers down their throat.