Made of double-walled stainless steel, this ingenious in-house design is like two travel mugs in one: the fastest, easiest way to make perfect matcha and the quickest way to make loose leaf tea on the go. Use the ultrafine infuser to steep loose leaf tea anytime, anywhere. Want frothy matcha fast? No whisk required – just use the matcha shaker attachment, add matcha and warm water, then shake, shake, shake. Once you’re done, push the safety button on the lid to release the pressure and enjoy. The double-walled insulation will keep your tea hot or cold for hours.