We purchased a medium, blue roll-mat for our four month old Labrador puppy to use for boundary training and to take with us when we visit dog friendly venues. These are high quality mats which is reflected by their price, but you definitely get what you pay for. This will last our puppy for years to come. Ordering was easy and delivery was speedy with good communication. If you are thinking about investing it might help you to know that we have been so impressed with the design and quality of the matt that we will be ordering a second one to replace what we currently use for our three year old Labrador.