The F1 is a helluva boot and its given you more good days touring than you can count, but now it's time to retire that liner. Sad to think she had her last day out, but she had a good run. Luckily there is a replacement liner to help you quickly get over the loss. The Pro Flex Evo will have you out smiling in no time. This intuition liner is heat moldable to make fitting easy. You old boots will be like new again and your feet will thank you for it.