$4 Per Custom Letter on Back Click tabs belowGeneral Size Chest Measurement (in inches) Waist Measurement (in inches) Arm Measurement (in inches) Small 34 36 28 30 31.5 32 Medium 38 40 32 34 32.5 33 Large 42 44 36 38 33.5 35 X Large 46 48 40 42 34.5 35 XX Large 50 52 44 46 35.5 36