Review on Simple Modern Cocktail Martini Shaker by Onsommoshit Mathews

Works very well and will not leak. I like that there are measurement markings on the lid - no need to get a separate dipstick or pull out other gauges. The same applies to the mesh part of the lid. What I didn't know when I bought it is that this company makes travel coffee mugs and that's basically what this shaker mug is. It comes with a coupon for a free coffee lid (you pay for shipping), so it's a 2-in-1 purchase! Their standard coffee mug lid is the most insulated I've seen, so it really helps keep your drink insulated.