Ruffin It Sizing Chart

 Size Chest Weight (Pounds)
X-Small 11 to 13 inches 3 to 5
Small 13 to 16 inches 5 to 8
Small/Medium 16 to 19 inches 8 to 13
Medium 19 to 21 inches 13 to 16
Large 21 to 24 inches 16 to 25