The mark consists of Yellow wording at the top reads, Certified Tree Climber. The center background contains an image of green tree leaves, a blue sky, and a brown wooden table. The center foreground contains an image of a yellow construction hat with a green leaf on it and blue equipment behind it. The wording at the bottom is the stylized letters ISA with a leaf image in the A, in yellow. The background of the entire image is green. There is an inner white border surrounded by an outer green border.