the sides are mesh (you can see completely through the backpack on its sides), along with the 3 ringed holes per side, so there is constantly air moving through

the sides are mesh (you can see completely through the backpack on its sides), along with the 3 ringed holes per side, so there is constantly air moving through it. she prefers the bubble attachment (the other is a perforated round disc) so that she can watch everything around her, and thus know she would not like the one you linked. she is never in high heat while in her backpack, and airflow is very good throughout it.