Review on PACK 20 Ounce Shaker Bottle Protein by Christine Gauthier

This is a great brand for the price. They work great if you're not picky. I use them for family breakfast smoothies. I quickly found that the kids pop up lids are too tight to open, even a schoolboy has trouble. And it squirts/leaks when you open it. Measuring lines are also very difficult to see when filling. Every morning I have to hold it up to the light at the perfect angle to make sure I fill to the 8oz mark. We have also found that they are best washed by hand. Maybe it's my dishwasher, but the bottom of the cups never seemed clean enough. So if you're okay with a few inconveniences, go for it. So far they have been of good quality and have held up well. The colors are fun for kids and they love the shape of the little blender inside.