Wow - Look out!  This is not for the shy and timid type.   These fashionable, fun and cute biker vests are a top seller.  Give your sweetie a little edge while walking down the street. 

XXSmall: Length of back (5-inch/12.7cm), Open-inch of the neck ( 10-12-inch / 25.4-30.5cm)

Xsmall: Length of back (7-inch / 17.8cm), Open-inch of the neck ( 14-17-inch / 35.6-43.2cm)

Small: Length of Back (9-inch / 22.9cm), Open-inch of the neck (17-19-inch / 43.2-48.3cm)