65% Polyester, 35% CottonPERFECT LEARNING SET - This playset gives children a new role - science explorer to motivate children to explore science, develop children's hands-on ability, self-learning ability and teamwork awareness, it is a great partner for learning VERSATILE LAB GEAR - Whether your child likes science, technology, engineering or math, this novelty playset meets his/her needs and it also can be used as a role-play costume at a child's party with his friends.Design for Kids - This is a lab coat for kids 4-6 years. We provide the sleeve length, bust, length and other details in the details page for your reference. For younger children, it might be slightly loose, you just need to roll up the sleeve and it can still be used with age