I bought the xxl for my 50 lb, 10 month old English Mastiff. I knew it would be too big, but she will grow into it fast. The velcro and adjustable straps with buckles made it easy to adjust it for her current size and still have a lot of room to grow! It was made well and easy to put on her. She was comfortable with it on and didn't try taking it off. I was worried about that because she's never swam with one on before. I believe it helped her feel more comfortable in the water as well because she seemed more confident swimming.
I tied her leash to the handle....that's what's dangling.

Took the dogs to the lake in their little vests and they were adorable! Even though they're only 4-month-old English Labs we got them the Large size just in case. Thankfully these vests are adjustable enough that could fit securely and have a good bit of room for expansion in the coming months. When the little pups got tired retrieving the dummies in the water the life jackets helped them stay up and not dip under the waves.
We loved the handles on the back that helped us pull them up and out of the water. It was also a great addition that the vests have a leash attachment point on the back so you don't have to worry about needing to get the dog's collar wet. They can wear the vest alone and you still have control over them.
Clean up was easy! The material doesn't absorb much moisture and dirt is easily sprayed off with a hose or the sink. Hang them to dry for a few minutes and they're good to go! Great purchase if you plan to take your dog out on the water!

I plan on taking my Boston Terriers to the beach -- they've never been - so wanted protective life jackets. My Bostons are 23 and 25 pounds. Purchased 2 vests in size L. The vests fit perfectly on both dogs. I have not tested the vests in the water yet but they appear sturdy and well made. If the vests don't work the way they should, I'll come back and update this review. Would definitely recommend for small dog owners.

This product was a great fit for our 34lb spaniel. There was room for adjustment and numerous attachments points that ensured a good, safe fit. We made use of the handle on the back to grab our dog and haul her up on a dock and raft. It would have been too high for her and the handle was a very convenient feature. This life jacket was well made and we felt more at ease with the dog in the water and knowing she had some floating support. We would recommend and buy again.

She LOVES her vest! .... My dog is a good swimmer, but my mom's dog is not. (My mom bought a yellow vest for her Shiloh after she saw Josie's) This vest seems to give both girls a sense of security. It's so cool to witness a dog experiencing something for the first time. She purposely was jumping in the water to swim around and feel the float. Also, it's easy for me to grab that top handle and swing her back on the boat. All my Josie wants is to be with me. So now when I'm going out on "the boat", I say instead, "Go get your vest!" and she's ready for kayaking!