And then, of course, 16 ounces is somewhere in between. The type of lid on your travel mug can make a fairly big difference in how you experience drinking. Some have bigger openings, some smaller.

Buy now £31.99, Lakeland An affordable pick for coffee and tea lovers, Joseph Joseph’s Sipp travel mug offers a smart, leakproof design that’s set to become your closest companion.

Without needing much encouragement, I volunteered to try out Ninja’s new coffee mug with Heatstore technology to discover if the wizardry worked. Here's how I got on. HeatStore ...

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