Sidas PU Classic Flex W。Hello! These are in excellent condition. ski boot inserts (believe these are tecnica brand) with Sidas insoles. However don’t see the brand name anywhere on them. (First pic is from Amazon for the Tecnica Zero G Tour Ski Boots 2021 and not actual liners you’ll receive). PLEASE NOTE: Cannot find sizing on boot liners. See measurements. Insoles are size large. Per the Sidas website, large insole fits shoe size US 9-10 (see pic) Thanks! Let me know if you have questions:) *first pic is stock and is for representation only and not of the actual item*