Polypropylene Imported ✅ This is a set of 12 lightweight and comfortable disposable kids lab coats. ✅ The kids scientist coats are waterproof, non-woven Polypropylene (40 gsm), they have a collar, 4 snap closures, one pocket on the bottom right, elastic sleeves, and a fun name tag to write the child's name! ✅ The kids lab coats are great for mad science themed birthday parties, dental, cooking, baking, art and craft, painting, classrooms, STEM projects, gardening, farming, cleaning activities, field trips, after school care activities, summer camps or science camps. ✅ Although these lab coats are disposable, they are so sturdy, we know that your child is going to save them for future use! They protect clothing from spills and is easy to wipe down. ✅ Extra small size lab coats are: 23.6" (length) and 13.7" (chest). ✅ Small size lab coats are: 25.6" (length) and 15.7" (chest). ✅ Medium size kids disposable lab coats are: 27.6" (length) and 17.7" (chest). ✅ Large size lab coats are: 29.5" (length) and 19.7" (chest). This is a set of 12 medium size disposable lab coats for kids bulk. The kids lab jackets prevent water and other liquids from seeping onto clothing. The child disposable lab coats are not to be used for protection against toxic chemicals, biohazards or anything similar.