All the Spring Fitness Gear We're Obsessed With For May

"Sometimes it's the simplest things that are the best. And this 20 oz. Klean Kanteen Insulated Reflect ($41) is one of those things. No bells or whistles. Just sturdy, dependable, and my favorite water bottle at the moment. I love the narrow mouth that's easy to drink from but also wide enough to thoroughly clean inside. The handle on the cap makes it easy to carry, and my water stays cold for hours. Of course the fact that's it's stainless steel on the inside makes me feel safe." — Jenny Sugar, editor, Fitness