Standard sizes are as follows. If you'd like a special item, please contact us. All of our collar sizes have a fair bit of overlap.

smalls fit 7-12" neck (up to 15 lbs approx)
medium fit 10-17" neck (10-40 lbs approx)
large fit 14-21" neck (30-80 pounds approx)
extra large fit 20-28" neck (80 pounds and up, approx)

Collars are available in 2 styles - buckle or martingale. Please feel free to ask questions about either. We have 4 widths currently as well ( 3/4" , 1" , 1.5" , 2" ). If the design you like is not the proper width, please email to see if this width can be upgraded to a wider collar. Special accessories like metal or reflective buckles are also available at an additional charge. Click on the images below to visit our collar pages for the appropriate sizes.