Rolf C. Hagen (USA) Corp. releases Exo Terra Moss Mats, which the company states are designed to provide a natural-looking alternative to sand and pebble substrates. The mats are an ideal choice of substrate for all types of reptiles and amphibians and are especially beneficial for rainforest-dwelling species, the company reports. Made from a soft, nonabrasive green synthetic material, the mats are hygienic and absorbent, the company adds. The mats may be trimmed to size using scissors and are available in three sizes: mini (12 x 12 in.), small (18 x 18 in.) and medium (24 x 18 in.).