OUR VERDICT

The mug has a nice textured finish. You can unscrew the whole top and drink from the mug, or just lift the tab and drink through the small aperture. With the top shut, the mug doesn’t leak even when inverted and it stuck until almost 90°.

PROS

Easy to use with lid on or off Sticks well to smooth surfaces Works well on GRP when heeled

CONS

Not cheap Doesn't work of porous surfaces