My dog is not able to "back out" of this harness as he can with other styles. The super strong velcro closure ensures a snug fit with room to move his legs. However, the manufactures should design a little fabric "grip" that you can grab when trying to remove the velcro wrap to make it easier.
My dog is 20 lbs and takes the x-large size. The designers should add more colors. I chose the red and deep purple colors and both look great.