I have been using the same harness for a few years and it is the kind with multiple straps and we wanted to try out the kind that is almost just a one piece harness. So we bought one from a Facebook store and it seemed fine but the first time I took my dog out in it she pulled at a rabbit and that caused the leash to pull the harness back toward her butt and that caused the velcro strap across her chest to come undone. After putting it back on i did a little test and gave it a quick pull and the same thing happened. I looked at the Julias K9 harnesses and they have the exact same hook up. A snap in that goes around the body and then a velcro connection that goes around the chest. Do these types of harnesses need to be super tight around the body so they can't move backwards and then leave slack in the velcro connection?? Any thoughts, ideas or opinions would be appreciated. Even opinions on the best harness. I think I would prefer this type of harness but with no velcro and just a snap. Thanks.

I'm not a fan of any harness that had straps across the chest that cross the the shoulders. Too much chance of overuse injury to shoulder soft tissue.

Try CTC dog gear. Their harness slips over the head has 2 snaps to hook rather than step through.
https://www.ctcdoggear-usa.com/product-page/ctc-dog-gear-leash-holder

I use a kurgo harness that slips over the head and has 2 metal buckles. It is not eacape proof. I have yet to find one that is. I went with one that had metal buckles because i have had the plastic ones break.

2 of mine wear harnesses, both have the kurgo. We looked at ruffwear alao but i thought the snaps looked cheap and breakable. I would never even consider velcro.

My pet store lets me bring mine in to try things on and test them first

A little thing about plasic buckles i discovered with cheap tractor supply collars was that even a collar rated for a German shepherd can break if the leash goes from slack to pulling really quickly, just like you discovered with velcro. The cheap buckles can handle a constant pull but cant handle a sudden pull.

I have the kurgo harnesses for car containment. Very easy to put on. I don't like walking my guys on them, first, they need prong collars, but second, the chest piece Isa bit too wide from my guys and rubs just a bit on the inner shoulder musculature. Otherwise I love the harnesses with the metal "nesting" buckles.

My terrier has injured himself pulling and a harness with the chest pad is what my vet recommended so that was the first kurgo and the second one came because sometimes spider gets squirrelly and slips collars or breaks collars. She actually can escape the kurgo as i found out last week at the vet, but so far its the most secure one ive found. I was really really paranoid about velcro and plastic and that took a huge number of options off the table.

Pound for pound huskies are the most powerful draft animal on the planet. And the force of going from slack to after something is hard on hardware and unprepared humans so i get the prong collar. My issue with prong collars is that they can really screw up a dog if used incorrectly.

I've had a couple harnesses but don't walk my dogs on harness. I have an X back for biking and a kurgo for the car if we are doing long trips but my go-to is the wiess walkie leash. Basic leash that wraps under the chest and through a loop. It's essentially a slip lead for their chest rather than their neck and they cannot back out of it no matter how much they try.

Have to use a prong like reins on a horse with a soft mouth!

The kurgo lasts a long time, as well. The one I use for Z'ev was one I purchased for Archer when he was a pup. Still going strong.

i have a few ruffwear harnesses, one for walking, the simpler version and then the one for their backpack, never had it come undone. Finn has backed out of the daily one only after getting caught up in a tree or post though.

Thanks everyone. I appreciate the advice. I think I will probably stick with the ones that we have been using for quite a few years. We have had multiple run in with loose dogs and rabbits and even coyotes and wild horse curiosity and have never had either of my two dogs get out of one. It think they take a few extra seconds to connect so I was looking for something a drop easier to put on. One dog is no issue putting on but my other one likes to turn it into a adventure!

https://ruffwear.com/collections/dog-harnesses/products/front-range-everyday-dog-harness
slip over head then 2 buckles, super easy to put on and secure, no leg loops or anything.

Finally, something that might work on my pitbull. His neck is as big around as his skull, so he slips out of collars, as well as backing out of his tight fit harnesses.