Kimarene

I pulled some batting out to use on a baby quilt, thinking it was wool. I’ve never used poly batting, but I’m not opposed. I’m planning to do straight line diagonal quilting. I’ve done a bit and, although I don’t have outright puckers on the flannel back, I do have some puffy wrinkles within the small squares where the diagonals cross, it’s definitely not flat. I’m wondering how it will look after washing and drying. I like the old fashioned quilt look where it gets all crinkly. Before I proceed I would like your advice. Thank you!
PS: I can’t manage to upload the photo I took, so I realize this question is a shot in the dark.

Tartan

Polyester batting tends to remain fluffy when washed. It will not get the flatter, old fashioned wrinkled look but it does have its good points too. It makes a softer, lighter quilt which is nice for tummy time on the floor. It washes and dries well. It is a little tricker to machine quilt as it tends to shift more then cotton batt or a cotton blend.