I've noticed over the years that the bracelets I find most comfortable have a center link that pivots on both connections (current link and next link). For example my Tag Aquaracer does this but my Steinhart OVM does not. The Steinhart's center link pivots at the connection to the next link but not at the connection of the current link (if that makes any sense). Is there a term used to describe this type of center link or this type of bracelet?