NightSweatz founder Lesley Hatfield knows there’s more to smart sleep wear and lounge wear than a halfhearted attempt to pick matching (ok, non-clashing) separates. The former personal trainer suggested sleeping in running wear after hearing a client complain about night sweats resulting from perimenopause. Realizing she was on to something, Hatfield worked to develop an entire line of sleep and lounge wear using a special moisture wicking fabric. In today’s tech-savvy world, fabric designed to pull moisture away from the body and allow faster evaporation means no-sweat sleeping.