Pros: Good color options, thick protective and non-slip soles, durable for dogs who like to run and play hard, seemingly comfortable, and they have two velcro straps to secure the shoe to your dog's foot.Cons: The sizing can be tricky. While the bottom velcro strap is adjustable, the second strap isn't the same (it doesn't have the plastic part where you can feed the velcro through to better tighten and secure the shoe). After ordering a second set in a smaller size, we still will have some issues with either the shoes coming off or twisting around so the protective sole is on the side or top of her foot and I'll have to go over and fix them (this typically happens when she's running around and playing but it has happened a couple of times just walking or moving normally around a building).Full Review:I was looking for good dog shoes for my service dog Charlie after a day out at a local dog event where I realized the next day her paw pads had minor burns from walking on the concrete and asphalt between activities. She never gave any indication that she was hurting so I knew I wanted to get her some shoes to protect her feet. After researching over twenty pairs, I decided on the XSY&G Dog boots due to their thicker soles, high reviews, and reasonable price. I went by their measurement chart but it wasn't easy to get accurate measurements on a pup who doesn't like her paws being handled. Charlie is a rescue mutt who weighs around 35 pounds, but she's tall and lean (we suspect she had some greyhound in her based on how she runs and how fast she is). By weight, she would be a Size 4 but I had measured her a couple of times and there was some variety in her actual measurements. I ordered a Size 3 and she wasn't a big fan when they came in. I tightened them as much as I could and her front two shoes seemed to be okay but her back two shoes came off very quickly. I ended up needing to order a second pair in Size 2. She wears Size 3 on her front paws and Size 2 on her back paws (I've read it's fairly common for dogs to have different size front and back feet so keep that in mind when you purchase them; I do like having an extra pair of each size to use when one pair needs to be cleaned or if one gets lost). Even when I try my best to secure them tightly, they still can come off or a shoe will rotate around her foot so the bottom protective sole is on the side or the top of her foot and she's walking on the fabric instead. I probably have to either adjust or put one of her shoes back on at least once whenever we go out. So for that, I'd recommend getting a color other than black so they're easier to spot if they come off. Otherwise, they seem pretty comfortable for her. She was able to adjust to wearing them within a few days and doesn't usually try to mess with them or take them off purposefully. I feel much better knowing her paws will be protected on hot surfaces (especially since we live in the south where it gets very hot) and potential hazards like anything sharp or gross she might step on when we're walking through parking lots or down the sidewalk. I definitely wish there was some kind of adjustment that could be made so the shoes are less likely to turn or come off but I'd rather have to fix them when that happens than risk her feet getting hurt. Overall, I'm pretty happy with them and Charlie seems to be good with them too. :)