The SIDI Soft Instep closure system is a wide, anatomically curved strap combined with a soft, thermo-formed EVA pad that distributes pressure evenly over the instep area. Adjustable from both sides, to perfectly center the EVA pad over a high or low instep. These for SIDI cycling shoes with the Tecno 2 generation instep strap system.
Available in colors, sold as a set of 2 (pair). 

SIDI cycling shoe replacement part for specific SIDI shoe models.  This item compatible with the specific SIDI models shown in the guide below.

SIDI Replacement Guide : 
Genius 7, Genius 7 MEGA, Genius 5, Genius 5 MEGA, KAOS, MTB Eagle 7, MTB Eagle 7 MEGA, MTB Cape, MTB Dominator 7, MTB Dominator 7 MEGA, MTB Dominator 5, MTB Dominator 5 MEGA. Also should work with Ergo 1 Carbon, Ergo 2 Carbon and Ergo 3 Carbon.