Double-wall insulated tumbler with a secure twist-on spill-proof lid. The lid clips closed to better prevent spillages, and is manufactured without silicone for a fully recyclable mug. 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 doesn't affect the recyclability of the mug. Volume capacity is 350 ml. Made in the UK. Packed in a home compostable bag.