BREATHABLE AND DURABLE MATERIAL: The vest harness for dogs large size is made of comfortable nylon material and breathable padded lining. The mesh design provides better breathability, especially for hot season. Soft and breathable dog harness is more comfortable for dog to wear in all seasons.CONTROL HANDLE & DUAL ATTACHING RING: There is 1 metal leash buckle on the back and 1 for the front chest, more flexible design for you to attach dog leash. There is an easy control handle on the back, is easier for you to control the dog.RIGHT SIZE FOR LARGE DOG: Chest circumference: 66-106cm, recommended weight 34-61kg, designed for large dog. PLEASE MEASURE YOUR PET'S SIZE BEFORE BUY IT, THE SIZE NOT FIT ANY PET, IN CASE INAPPROPRIATE SIZE PROBLEM TO BRING ANY INCONVENIENCE FOR YOU.SAFETY REFLECTIVE STRIP & VELCR O DESIGN: The dog harness is also with reflective strip can be easily noticed in dark place, ensuring the safety of night walking. Perfect for travel, daily walking, running, etc. There are 2 velcr o belt on the back of the dog harness, you can attach name card or patch.4 ADJUSTABLE STRAPS & QUICK RELEASE BUCKLE: The 4 straps are all adjustable with fasten buckle, freely adjust size. You can adjust the harness for dogs medium size from 4 sides to get properest size for your dog, no tightness or uncomfortable feeling. Quick release buckle design is easier and more convenient to wear or take off.