Celebrate the Chesapeake with our specialty (Maryland) Crab collars! Adjusts for a perfect fit. Quick release buckle. Made in the U.S.A. XS (10-15"), Small (11-18"), Medium (12-20"), Large (15-24"). XS and Small collars are 3/4" in width, while Meduim and Large are 1-1/4". These collars are a generous size! Typically a Lab or Golden will wear a Medium in this collar.