These liners are for entry-level kids just awesome to be mounted by the option the middle roller to the rear parallel to another, it can be done much easier for beginners to get started. The skates are surprisingly well made, better than expected. And adjustable in size, they are on top of that. Only the enclosed manual was solely to Czech because the skates were probably produced there. Even without instructions you can easily adjust the size, or remounting the rolls accordingly.