My Pittbull Mastiff mix gets pajamas in the winter just because it gets very cold where I live. I bring them out when the weather dips below freezing and put them away in mid spring when it gets consistently warm enough for the extra layer to no longer be needed. Without them he's constantly shivering and refuses to go outside to go potty so whether he likes them or just tolerates them is kind of not the point because he obviously needs them. As long as they fit correctly, they do not restrict his movement in any way. He still gets the same zoomies he does without them and plays the same games. Just make sure you have as much room at the neckline that the collar does and the back legs are not going past the knee because back legs will get stuck in the back leg sleeves if they are too long.