FYI.....I saw a Tblondi in a pet store & they had some small pieces of slate slanted and resting against the side of the tank.....The Tarantula stayed there between the glass and the slate. It made a good hide. Anyway, I decided to try some for my Tblondi and my big Rosie......they seem to love it....they both climbed on it to check it out & now they're using it instead of the hides I bought for them.