Our active range is made for resizing.  But please be aware - you can resize down but not back up so we recommend doing this very slowly in stages.  

Step 1

Open the clasp in the buckle.  

Step 2

Remove silicone strap and cut to size - DO THIS IN STAGES AND CHECK EACH TIME.  

Remember you cannot size back up.  

Step 3

Put the silicone band back into the buckle - be sure to NOT push it to the end.  It won't close ontop of the band. Pull i t back slightly.  

Step 4

Squeeze the teeth down - they should sort of click down.