I buy the largest cutting mat when I find a sale and cut it to fit smaller dies. The circle and hex dies I may not want to cut but one size and the small cutting mats to fit just that size really makes the cutting easier. I don't pamper the Go and will use a regular rotary mat to cut more layers as the mat isn't as thick as the Go mats. I can buy another if I mess it up so don't do what I do, just saying it will take abuse and keep on going.