FeaturesThe webbing is made out of recycled plasticStrong clipsDurable D RingInfused with citrusPart of the Earth Friendly Range Available in 4 sizes XS, S, M , LMeasuring for your dog for a collar:Ensure your dog is standing stillMeasure using a fabric tape measure or stringMeasure the neck line at the base of the neckYou should then be able to fit 1 to 2 fingers inside the collar, for your dog to be comfortable To Fit Dog's Neck Size Colla..