Double-wall insulated tumbler. Volume capacity is 350 ml. This Americano® Pure contains Biomaster antimicrobial technology. This provides protection against the growth of harmful micro-organisms on the surface of your mug. This is effective for the lifetime of the product, and doesnt affect the recyclability of the mug. Made in the UK. Packed in a home-compostable bag. PP Plastic. 99% PP Plastic and 1% Antibacterial additive.