Mesh Non-Pull Harness Designed for Moderate to Heavy pullers! Fits like a glove! Offers total control, style and comfort for your dog. All materials and components are made of the highest quality nylon and nickel-plated hardware to reduce weathering. Sizes: Small: 9-12 inch neck and approximately 8-25 lbs, Medium: 12-17 inch neck and approximately 25-60 lbs, Large/XL: 16-33 inch neck and approximately 60-100 lbs Royal Item Number: DSP34272