This item is reversible and can be used on either side. Surface: Korean quilted fabric Reverse: Japanese organic cotton Snap buttons: Plastic ↑ Made with these materials, so it's safe for your child to use =͟͟͞͞♡ Size: Neck circumference: Approximately 27cm Neck drop: Approximately 13cm I've always loved sewing and using a sewing machine, but I'm an amateur, so there might be some imperfections. I carefully create these while my child is sleeping, taking my time ◟꒰ ´꒳` ꒱◞ Thank you.