Bought your Hi Flyers before February 2026? These are your liners. A fresh pair for v1 boots, the ones with a letter code stamped on the sole. Pretty much the same as the current liner, just cut to fit v1 shells a little better.New liners in, and your trusty shells are basically new boots. If your size is sold out, the current liner works as a substitute. Sizing questions? [email protected]. Which size? Check the bottom of your boot.V1 boots are sized with a letter code stamped on the sole. Flip a boot over, find the code, and match it here: Code on sole Your liner size S M 5 / W 6 M M 6-7 / W 7-8 L M 8 / W 9 LL M 9 / W 10 3L M 10 / W 11 4L M 11 / W 12 5L M 12-13 / W 13-14 Code worn off or hard to read? Email [email protected] with a photo of the sole and we will sort you out.