I chose this type because I previously had an experience with a different type of harness where my dog slipped out. It's easy to put on. Please refer to the photos for the size. It's convenient because you can quickly lift your dog, even at a dog run. This product is convenient to have multiple pieces for washing. Bulk purchases are welcome. I can discount the shipping cost for items that can be shipped together, so please comment before purchasing. Immediate purchase is also OK. This is an imported item. I have checked the strength, etc. Thank you for looking.