This mold was originally taken from south of Sydney off Basalt rock formation. Although flat in profile, it still has a distinctive rock finish, making it a perfect non obstructive rock background, taking no more than an inch of your tank. Due to its style it is extremely easy to roll up and put into an enclosure. These products are available in flexible style and the ridged foam style. Please remember you are not able to bend the product made in the foam material, as it will break.