The cover is made of terry, not quite wertig touches and bad smells at least out of the box by chemicals. Whether this is due to at a childcare article, raises more than a rhetorical question.
It is not really a reference, but rather a coating because it is placed over the baby correct reference safes and hooked with mini rubber loops on the more mini plastic hooks under the seat edge. Honestly - I've though slender hands and, if need be, also patience, but I've given up and the coating with rubber bands tied back. So the thing sits although not precisely, but it is sitting still.
Functionally, to say that at least my son no longer sweating now in baby safe - we have two 500km rides behind us and son remained dry. Without coating he was drenched in sweat within minutes.
Full rating because the coating totally fulfills the purpose of a star deduction, because the attachment is extremely fiddly, and because he smelled of chemicals.