Whether you're climbing at your local gym or outside at the crag, the Marmot Women's Solstice Tank Top will keep you comfortable while you push your limits. The synthetic blend wicks away moisture and dries quickly to keep you comfortable whether or not you have air conditioning to help. It is rated to UPF 35 to protect you when you take your workout outside, and the open-back design is fun and allows plenty of air to move, keeping you cool while you train.