Stainless steel body, PP with wood fibre, polystyrene, silicone & nylon. Vacuum insulated thermos for keeping your breakfast, lunch, snack or drink hot for up to 6 hours or cold for up to 8 hours. 100% leak proof. Full steel food contact. Elastic & machine-washable nylon strap. High quality stainless steel. Spoon made from 20% natural wood fibre. BPA-free. Hand wash. Packaged in Black+Blum retail gift box. Black+Blum are proud members of 1% for the planet and donate one percent of their total annual sales (including this item) to non-profit environmental causes.