Item Measure by hand, it could be 1-1.5inch different. hope you can understanding, will be sincerley appreciated.
M:Suitable for height:61"-66.14"
L:Suitable for height:66.93"-68.90".
XL:Suitable for height:68.90"-70.87".
XXL:Suitable for height:70.87"-72.83".
XXXL:Suitable for height:72.83"-76.77".

• Material: Internal use of EVA High buoyancy foam
• Three adjustable belts, fits you body most
• Suitable for personal watercraft, waterskiing, or other towed uses
• Keep your youngster out of danger while on the water
• Open-sided vest

Material: Internal use of EVA High buoyancy foamKM Outdoor&Sports