Dog harness with unique bucklebone enabling quick fit and release of collar. 100% Nylon. Adjustable to ensure an easy fit. Easy to clean. Ideal for walking your dog. Small: 1.2 x 25-39 x 30-44cm (0.5 x 9.8-15.4 x 11.8-17.3in). Medium: 1.5 x 30-48 x 37-55cm (0.6 x 11.8-18.9 x 14.6-21.7in). Large: 2 x 36-59 x 45-66cm (0.8 x 14.2-23.2 x 17.7-26in). X Large: 2.5 x 46-76 x 56-80cm (1 x 18.1-29.9 x 22.1-31.5in).