XS - 3.5(inches)

    S - 4(inches)

    M - 5(inches)

    L - 5.5(inches)
     
    XS - 8-10(inches)

    S - 11-13(inches)

    M - 14-16(inches)

    L - 17-19(inches)
     
    XS - 8-10(inches)

    S - 11-13(inches)

    M - 14-16(inches)

    L - 17-19(inches)
     
    *We recommend our customers measure their pets neck circumference to avoid ordering/receiving the incorrect size*