3mm Volume Reducer
This volume-reducer can be placed under a Sidas insole to reduce the fitting room and provide better foot support inside the boot, for superior precision and comfort.
If you are finding your ski or snowboarding boots a little sloppy these are there to remove a bit of the space, making your boots feel a little tighter and firmer giving you more control and help reduce the strain on your over stretching your feet.
Size Guide: Mondo fit / (European)
Small: 23.5 - 24.5 (37-38)
Medium: 25 - 26.5 (39-41)
Large: 27 - 28 (42-43)
Extra Large: 28.5 - 29.5 (44-45)