The slits in the arch help reduce material allowing the pad to compress providing a softer/less rigid feel.
Medium arch, 32mm kick
Fatal error: Uncaught Error: Cannot use object of type stdClass as array in /var/www/html/www.onboardstore.com.au/shop/detail.php:233
#0 /var/www/html/www.onboardstore.com.au/shop/accessories/detail.php(2): require_once()
thrown in /var/www/html/www.onboardstore.com.au/shop/detail.php on line 233