We've rounded up essentials — from UPF shirts and insulated water bottles to breathable sneakers — to help you stay cool, comfortable and moving all summer long. Its lightweight, breathable fabric helps keep you cool on hot days, and at just $10, its easy to stock up on multiple colors. Its wet-to-cool technology activates when damp to help keep you cool on hot walks, and it's machine-washable for easy cleanup after sweaty days. A FOX favorite, Skechers Go Walk sneakers slip on hands-free for added convenience. Walking and running gearRound out your walking and running kit with water bottles, bags and more.