This is a great dog harness. It fits snug without being constructive. My dog Suki can't escape from it, which is amazing. I love the ease of getting it on and off her. Whoever designed this, is in my opinion a genius. :) It's overall a very minimal harness that you can really trust that is not complicated and offers great ease of movement. I plan to use this harness year round even though it's wonderful for our terrible heat here in the south during our summers.