Dogs Kingdom Faux Croc Leather Spiked Dog Collar 3" Wide, 40 Large Spikes Pet Supplies Faux Croc Leather Spiked Dog Collar 3" Wide, 40 Large Spikes S:Overall length 3*22 INCH (7.5*56CM),will fit 17-20" neck. M:Overall length 3*24 INCH (7.5*61cm),will fit 19-22" neck. L:Overall length 3*26 INCH (7.5*66CM),will fit 21-24" neck. Kindly Please check the neck size of your pet for your order.