Double-wall insulated tumbler with a secure twist-on spill-proof lid and 350 ml capacity. Contains 25% plastic derived from sugar cane. This renewable source absorbs carbon dioxide whilst growing and is a by-product of the sugar industry. The use of sugar cane means less oil is used in the manufacture of each tumbler. The tumbler is 100% recyclable and packed in a home compostable bag. Made in the UK. BPA-free.