A vest that lies on his back like a jacket, so nothing goes over his head

“It always causes chafing/redness under my pup’s armpits.” An owner wrote that on r/puppy101. No vest can promise you that your dog will never have that. What a vest can do is show you where each strap sits. Then you see a problem on the first walk, not on the thirtieth.

This is a cloth vest harness made of polyester. A flat panel lies over his back. One strap goes around his neck. One goes around his ribs, behind the front legs. Plastic buckles close both.

A cream edge runs around the panel. A cloth bear sits in the middle of it, with a metal ring under the bear. The leash is in the box, in the color of the vest. Here is every part in one table.

That is all of it. There is no handle and no ring on the chest. Keep that in mind for the section on pulling.

Tape him behind the front legs and read the number as it is: M covers 34 to 44 cm, L covers 44 to 54 cm

Use a soft tape, the kind from a sewing box. Wrap it around his ribs right behind the front legs, at the widest point. Keep it flat and snug, not tight. Write the number down.

Look that number up exactly as the tape shows it, with nothing put on top of it. Here’s why: the table lists a dog’s chest, not the vest laid flat on a kitchen counter. M is cut for a chest of 34 to 44 cm and L for 44 to 54 cm, so the tape tells you which row he is in.

Two fingers come later, once the vest is buckled on him, and they should slide under the neck strap and under the belly strap.

Three tapes, three answers. A tape of 38 cm is an M, and a tape of 46 cm is an L. A tape of 44 cm sits right on the line where M ends and L begins, and there we take the L.

Say the tape reads 43 cm. That is an M with only 1 cm left at the top, and if he is still filling out, take the L. An M with no room left cannot be let out.

If the tape reads under 34 cm, M is too big for him. Our puppy harness starts at a 32 cm chest. If it reads over 54 cm, L is too small, and our mesh step-in harness reaches 61 cm.

If the puppy is not home yet, ask the breeder for his chest number, and tape him on day one

The crate is in the hall. The bowl is on the floor. The puppy arrives on Saturday. You cannot tape a dog who is not there yet.

Ask the breeder for his chest measurement, taken just behind the front legs, and ask on which day it was taken. A puppy grows every week, so a number from last month is out of date. Read it against the chest column below. If the breeder has only a weight, wait and tape him on day one.

Weight only checks it. A Frenchie carries his weight in his chest, so two pups of 6 kg can want different rows. If his weight points to another size than the tape does, go with the tape.

A 25 lb Frenchie weighs 11.3 kg. That is above the 9 kg the L is printed for, so the weight check cannot settle it for him. If your dog is already near that, tape him before you order.

A chest under 34 cm is too small for M. Start with the puppy harness. Come back to this vest when the tape reads 34.

Put it on in the kitchen: neck first, belly second, two fingers under each strap

Do the first fitting in the kitchen, not at the front door. Keep a treat in your other hand. He should meet the vest before he meets the street.

First, lay the vest across his back with the bear facing up. The ring should sit in the middle of his back.

Second, close the neck strap. Slide two fingers under it. If two fingers do not fit, let it out. If your whole hand fits, take it in.

Third, bring the belly strap under his ribs, behind his front legs, and click the buckle. Two fingers under this one as well. One owner on r/Frenchbulldogs puts it the same way: two fingers between his chest and the material.

Now let him stand and take a few steps. The panel should stay centered on his back. If it slides to one side, one strap is looser than the other. Check both.

Nothing in those three steps goes over his head. If he hates that, you will notice the difference at step one.

If he sits down and will not walk, the vest is not always the reason. A new strap on a young dog is strange. Try three days.

Day one: on for one meal in the kitchen, then off. Day two: on for a slow lap of the hall or the yard. Day three: the street. If he still freezes on day three, take it off and ask a trainer.

Each front leg goes through a gap between the two straps, and that gap is where to look

On each side, his front leg passes through the space between the neck strap and the belly strap. The notch in the panel sits above that space. The cream edge runs along the notch.

Owners look at that gap first, because it is the armpit. A neck strap that is too loose lets the vest slide back. Then the belly strap can creep forward, toward the elbow.

So set them in order. Close the neck strap first, with two fingers under it. Then close the belly strap. When he trots across the kitchen, the belly strap should stay on his ribs, behind the elbow.

Then stand him on all four legs and look from the front. Both legs should hang straight down through their gaps. If one leg is pushed sideways, open both buckles and start again.

One ring on his back: this vest walks a dog who walks, and does not stop a dog who pulls

The ring is on his back, under the bear. That is the only place the leash can go. There is no ring on his chest.

Here is what that means on a walk. When he leans into the leash, the pull runs up and back along his spine. Nothing turns his chest toward you. A front ring does that, and this vest does not have one.

So be honest with yourself. If he pulls hard, this is not the vest. Our front-clip harness has a ring on the chest panel and one on the back. It is sized by weight: S for 4–7.5 kg, M for 7.5–17.5 kg. A chest ring turns him when he leans. It does not teach him to stop.

For a young dog who is still learning what a leash is, one ring on the back is the simple setup. The leash is 1.2 m long and 1.5 cm wide, in the color of the vest, with a metal snap hook.

The leash clips to the ring, and the ring sits on the panel. The panel is joined to both straps. So a tug goes into the panel first and reaches the neck strap and the belly strap from there.

Three walks, three checks: what to look at after the first, the third and the tenth

A vest that looked right in the kitchen can look different after a walk. These are the checks we would do, in this order.

Check the buckles on every walk as well. Both should click all the way. Look at the cloth loop that holds the ring. If it starts to fray, put the vest away.

Six colors, one cut, and a bear whose face changes with the vest

The colors are sage green, pink, light blue, gray, mustard and off-white. Each has a cream edge around the panel and a leash in the same shade.

The bear changes too. Its face is brown on the green and the mustard vest. It is pink on the pink one, blue-gray on the blue one, and gray on the gray and the off-white.

All six share one cut and both sizes, M and L. The table in the size section holds for every color. In our photos it is green on a fawn Frenchie, pink on a black one and blue on a cream one.

Five dogs should skip this vest, and each has a harness of ours that suits him better

We would rather send you to the right harness than sell you this one. Here is who should skip it.

This vest has no reflective trim. If you walk before sunrise, the last row is for you.

Two of our harnesses are closest to this one. Here they are side by side.

Between 34 and 49 cm, the puppy harness and this vest both fit. The puppy harness suits a dog who is fine stepping in. This vest suits a dog who is not, because nothing goes over his head and his legs do not have to find two openings.