Product dimensions measured on a flatly laid out product.
Tip: measure an item of clothing at hand to compare.
Axial tilt is the reason for the season. In astronomy, axial tilt (also called obliquity) is the angle between an object's rotational axis and the perpendicular to its Orbital plane, both oriented by the right hand rule. At an obliquity of 0°, these lines point in the same direction i.e. the rotational axis is perpendicular to the orbital plane.
Tags: the big bang theory shirt, science shirt, reason for the season, holiday t shirt, earth shirt, astronomy shirt, Voyager golden record, Smart Apparel Europe, I fucking love science shirt, Carl Sagan shirt, Bad Christmas sweater shirt