Small/Medium (Large/XL, 2X/3X): Bottom Circumference 51¾ (57½, 63¼)”/131.5 (146, 160.5) cm, Top Circumference 22¼ (24½, 27)”/56.5 (62, 68.5) cm, below Neckband, Length 16½”/42 cm, including Neckband