Happiest baby swaddle. Size large. You wrap the baby inside with Velcro straps so they feel secure and then zip up. You have the option for arms to be in or out. Only washed a couple times. I purchased and realized my baby was too big. Last pic is a close up of some threads that have a little fuzz on them. Like what when I received, and looks like you could clip off, but I didn’t bother.