The Eco Cool range is designed with sustainable living at the core. The outer fabric of the bags and lunch kits are made from recycled PET bottles (rPET), so you can enjoy fresh food and drinks whilst contributing to saving the Earths natural resources. Thermos branded Stainless Steel zipper pull. 18 PET bottles were used to make the 100% recyclable outer fabric. Insulated with 5mm IsoTec premium closed PE foam. 100% PVC FREE PEVA HEAT-SEALED LINING. Durable Stainless Steel Fastenings. Adjustable padded carry strap. Ref: UTWI2652