Review on 🥤 Insulated Stainless Steel Water Bottle with Wire Whisk - BlenderBottle Radian Shaker Cup, 26-Ounce, Matte Black by Janet Hill

Bottle is generally good but leaks when shaken. Since shaking the bottle is part of its purpose, it shouldn't leak, even a little. Gentle shaking is not a problem, but vigorous shaking to mix powders can cause leakage. You should definitely not put this in your pocket on its side, it will leak. Leak aside, the bottle looks great and is well insulated. You can make a smoothie with milk and not worry about it heating up too quickly. If the bottle wasn't specifically made to be shaken I wouldn't be so strict about it, but since it's only made to be shaken it needs to be sealed tightly enough to avoid leakage.