Mini Hearth, Bifurcated (Brown 725) Immediate Shipping Formicaria and Mini Hearth XXLs have

and Mini Hearth XXLs have these as standard fits to the design

The Pioneer XL is a large ant habitat from Tar Heel Ants

The Mini Hearth comes standard size by default with standard glass and either a grey or beige color with white sand decor for the foraging area

Brown Exterior/White Sand interior

Mini Hearth, Bifurcated (Brown 725) Immediate Shipping Formicaria and Mini Hearth XXLs haveReady for Immediate Shipping, this Mini Hearth comes as shown in the photo accompanying this product. ****Bifurcated Mini Hearth 2 levels This is optimal for tiny and small ants, SOME medium ants as well. Not recommended for larger ant species such as Camponotus pennsylvanicus or Camponotus castaneus.**** This is a large area for a colony of tiny or small ants. The extra level will be appreciated in terms of living space for a growing, small colony.