Panels are approximately 18" x 18" and printed on cotton lycra at about 220 - 240 gsm.
Don't forget about the coordinating fabric!
1001 Harry Potter My Little Pony Child Panel and Coordinate
301 Adventure/Outdoor Series- Never Stop Dreaming Child Panel
302H Explore Trees Child Panel (on HEATHER GREY)
307 Adventure Series: All Good Things are Wild and Free Child Panel