How do I pick the right size?

Measure the widest part of the chest behind the front legs and compare it to the chest range, not the weight. The X-Small fits a 12 to 16 inch chest, and larger sizes step up from there. When between sizes, size up.

Does the front D-ring stop pulling?

It gives mild steering help for dogs that pull lightly. A determined puller will still pull, and a front-clip harness with a martingale loop controls better.

Is it good for dogs that hate harnesses over the head?

Yes. The dog steps into the loops and you buckle once at the back, so nothing goes over the head.

Can I leave it on in the car or crate?

It is a walking harness, not a crash-tested car restraint. Remove it for crating and use a proper car harness or crate for travel.

How does it compare with a padded mesh harness?

It is lighter and easier to put on, but has less padding and structure than a mesh harness built for strong pullers. It suits calm small and medium dogs better than hard pullers.