About this projectAdjustable SizeThe collar can be adjusted in length 16.5-22.4 inches (42-57cm), recommended neck circumference is 17.7-21.6inches (45-55cm), and collar width is about 0.7 inches (2cm).STRONG AND DURABLEWear-resistant nylon material, durable, quick-drying, soft, light and elastic. Fasteners made of alloys with excellent impact resistance have high tensile strength, corrosion resistance and hardness.Cushioning Neck GuardBreathable mesh is filled with high-quality cotton wool, which is soft and comfortable, does not stretch the neck, and avoids scratching the dog's skin.Safety ReflectionNylon webbing with reflective material, can be seen clearly from a long distance under the illumination of light. Don't worry about walking at night with this money ring.[Applicable season] It can be used all year round. The high-quality material has properties such as quick drying, deodorization, abrasion resistance and tensile strength, and is suitable for various environments and weathers.