Very soft and durable genuine leather personalized dog collar with sparkling crystals decoration,very beautiful and elegant Nickel plated steel buckle,5 eyelets adjustable,soft and heavy duty Suitable for Small Medium and large size dogs,Perfect for daily walks and training S: Overall length 1.6*20'(4*51cm), will fit 16-18.5'(41-47cm) neck M: Overall length 1.6*22'(4*56cm), will fit 18-20.5'(46-52cm) neck L: Overall length 1.6*24'(4*61cm), will fit 20-22'(51-56cm) neck Kindly please measure your dog carefully to make sure the correct size before order,100% money back or replacement if you are not satiesfied with the quality and welcome suggestions on improving our products