Our Favorite Fitness Products of 2014

There's nothing like drinking a smoothie out of a big glass mason jar, and if you like to take your drinkable breakfast to go, like me, you can avoid spilling your precious kale-pineapple-blueberry smoothie by using one of these Cuppow lids ($8, originally $12). Slip one underneath the metal ring, and you have an instant to-go container. Made of BPA-free plastic, choose one that fits a regular or wide-mouth mason jar, and the small hole is perfect for slipping in a straw. They come in a few different colors such as blue, mint, or pink if clear isn't your fave.

— JS