This insulated Bamboo Travel Flask is suitable for personalisation via laser engraving, pad, rotary or digital printing. This sustainably sourced bamboo bottle has a double walled stainless steel inner case and can be used with both hot and cold drinks. The insulation can keep drinks cold for up to 12 hours and hot for up to 9 hours. This flask is very durable and will retain its look for many years to come. Ideal to use it again and again. • Keeps drinks cold for up to 12 hours and hot for up to 9 hours. • Capacity: 500ml / 17 oz Dimensions: 24.5 x 6.9 Ø cm (9.64" x 2.71" Ø)