I get that they need air so they don't suffocate and to keep them from overheating in hotter environments.
Does anyone have any information on what is ok? Are grommets ok instead of windows? Is it generally something you don't need to worry about as long as you don't seal the pouch shut?
well a bonding pouch without a window and without a zipper is a sleeping pouch. I have sat with gliders in sleeping pouch on couch with hand in the pouch so they will sleep with my hand and scent.