How do I pick the right size?

Measure the dog's chest girth behind the front legs and match it to the size chart, not the dog's weight. These straps run small, so size up if the measurement falls between two sizes.

Is it strong enough for a dog that pulls?

It is a light nylon strap with no padding or front-clip control point. It suits calm walkers and small to medium dogs; strong pullers do better in a padded harness with a front ring.

Yes. The polyester and nylon webbing is washable. Hand wash in cool water and air dry to keep the reflective stitching and buckle intact.

Does the reflective trim actually show up at night?

The reflective stitching lights up in direct beam from car headlights or a flashlight. It helps drivers spot the dog, but it is not a light source on its own.