This 2-sided model is approximately 75x enlargement of skin cross-section. The burn side of the model shows indication of 1st, 2nd and 3rd degree burns. The reverse side illustrates normal skin anatomy. Skin anatomy model size: 6" x 2-1/4" x 4" Card size: 6-1/2" x 5-1/4" 5" x 6" x 1" White Base included with every model. Made of durable high quality materials