The Knot-a-Collar is a unique approach to dog collars. Ruffwear's low-profile design provides a clean & elegant climbing-inspired solution for an everyday collar. the sliding fisherman knots are adjustable for a customised fit & the all-metal hardware keep your dog secure. Reflective trim aids their visibility in low-light conditions. The collar's round profile settles comfortably in short or long fur & reduces matting. You can easily add or remove tags with the Quick Ring & annoying tag ingle is reduced by the silicone silencer.