Im very happy with this costume. Its typical cheap costume material but I like the fit and comfort design. I put a thin layer of clothes underneath her and she was very comfortable wearing it indoors. She wore a puffy coat on/off outdoors and its late March in MT. My daughter is 4. 40 in, 33 lb. The 3T-4T fit perfectly in length and with plenty of wiggle room in overall size. The mask/head cover was a little large so I pinned the back with a safety pin so it was much more comfortable on her face. The cape also has a Velcro to the outfit and then secures around the neck. That was my favorite part bc the Velcro doesnt scratch her skin and doe not strangle her since its attached to the body part of the outfit. She had a lot of fun wearing it at a preschool birthday parties since they play PJ Masks a lot together at school.