A thermos flask featuring a painting of brightly colored forest birds resting on a branch. The water bottles from Heinen Delfts Blauw are a tribute to our beautiful Netherlands. Each design tells a story and is a work of art in itself. These special bottles are made of high-quality stainless steel, making them not only stylish but also durable and environmentally friendly. The double-walled insulation keeps your drinks cold for up to 24 hours and warm for 12 hours, ideal for on-the-go or home use. Treat yourself, or surprise someone else, with a thermos flask from Heinen Delfts Blauw. A perfect gift that beautifully combines functionality, quality, and Dutch culture.