A window covering includes a plurality of lift cords extending from an upper rail and window covering material connected to the upper rail or the lift cords. A plurality of safety devices are attached to the window covering. Each safety device includes a male member and a female member. One of the members is attached to a respective lift cord and the other of the members is attached to an upper rail, a portion of the window covering material or a lower rail. The male and female members are configured to be attached together such that the male and female members separate from each other when a release force acts on at least one of the male member and female member.