secure status not extending to item links?

[moebius]

having a small problem with a well established site.
when a user clicks on a catalog item from a secure page, they go to an unsecured item page. 
I've not found a setting to fix this, so I'm a little confused.
https://www.asatru.org/wtree

any assistance is appreciated

[abantecart]

You can set both URL settings to use HTTPS
Go to system -> settings -> store details