Specifications:

Made of breathable neoprene material
Color blue

Please note: Product color may slightly vary due to photographic lighting sources or your monitor settings. 

Measurements:

Small：17 x 30 inches (43 x 76 cm) 
Medium：20 x 36 inches (51 x 91 cm)
Large：24 x 42 inches (61 x 107 cm)

When in doubt, always go with the larger size as the vest can be adjusted to 5" smaller than the above-listed measurements.