The S3 features a permeable wide weave mesh over hundreds of highly perforated protective foam panels to maximize ventilation - without sacrificing protection or performance. The wide weave mesh helps keep you cool, dry, and ready * Reversible and adjustable shoulder caps attach inside the chest protector for no irritation to the body, while maintaining the same fit * The S3 universal design accomodates both male and female athletes for use in baseball and softball * This unique harness system hugs your back and shoulders; it doesn"t billow up. Instead, it conforms to the shape of your shoulders for maximum protection and coverage.