TPS Mug 9cm White Enamel. Perfect for use in the garden, at picnics, festivals, or even when camping and at the beach. A beautifully small handful of French inspired design and charmingly rustic style, this high quality classic enamel mug is perfect for delicate hands. - Cooking with Enamel cookware ensures that all minerals and vitamins are preserved, and it is suitable for all heat sources, including induction. TPS enamelware has full National Health & Safety Certification.