A double-walled insulated eco-friendly tumbler that has an easy to clean functional wide mouth design. Made with inner stainless steel and of outer natural bamboo, this tumbler comes with a reusable straw, cleaning brush and it has a capacity of 400ml with a measurement of 16cm by diameter 6.5cm and an approximate weight of 201gm. Sustainable natural bamboo produces unavoidable variances in colour and grain pattern for each product.