Size and fit Available in four sizes to fit dogs of all sizes. Please measure the dog's neck before . The collar is adjustable, and you should choose the correct size to ensure comfort and safety. A twofinger breathing room between the collar and the neck is suggested. Comfort and materials Made from leather that is flexible and soft. The outer leather is durable and stitched to an inner breathable PU leather lining for softness and to help keep the neck dry. Inner lining and waterproof design The inner layer is made of breathable waterproof cloth, which reduces friction on the dog's skin and enhances comfort, especially in damp conditions. Hardware and durability Heavy duty buckle and D ring are built with surgical grade stainless steel hardware lacquered to prevent rust and corrosion. Practical use scenarios Daily walks with dogs of any size, where a reliable and comfortable collar is needed. Training sessions that require secure attachment and durable hardware. Outdoor activities or wet weather where waterproof lining and skinfriendly comfort improve wearability. Function and compatibility Designed to provide a secure, comfortable fit with an adjustable size range, durable construction, and a soft, moisturefriendly inner lining to support long wear during daily activities, training, and outdoor adventures.