I have been looking for something other than the the old 1" tape across the clear visor to add a bit of shade as the sun goes down. I have tried not only the tape but also the Super Visor. One of the good things about the Shark Evoline is its internal sunvisor, saves you wearing sunnies
This still does not block enough sun out for me.
I still wanted something that did not block everything out, the Sunblocker does the job well for me. I can now, with the sunvisor in the helmet down and the Sunblocker on the clear visor have best of both worlds.
It has worked well riding into the afternoon sun.
The link if you are interested
http://www.rockycreekdesigns.com.au/all-products/17-helmet-accessories/71-sunblocker-universal