Hurtta Padded Neoprene Dog Collar with 3M Reflectors for Safety NO TWO DOGS ARE THE SAME - Dont guess on the size. Take proper measurements in the correct locations then compare your dogs measurements to the size chart SAFE - The safety and adjustability of Hurtta padded collars makes them an excellent choice. The safety lock mechanism is designed so the stress caused by pulling is not placed on the clip buckle COMFORTABLE - By distributing the pressure caused by pulling across a larger area, the Neoprene-padded Hurtta collar softens the stress placed on the dogs neck and throat area NO CHAFE - The ergonomic collar does not chafe the dogs neck thanks to soft Neoprene padding which also makes the collar machine washable STRONG - The collar structure has allowed the extension of the padded section without compromising adjustability and improving the pulling strength of the collar