What does Shatnez refer to in Halacha?

Shatnez refers specifically to the prohibition against mixing certain types of fabrics, particularly wool and linen, in a single garment. This commandment is derived from the Torah, where it is explicitly stated in the book of Deuteronomy that one should not wear a garment made of both materials. The underlying reason for this prohibition is not entirely clear and is a subject of rabbinical interpretation, but it is generally seen as a divine decree that underscores the importance of maintaining distinct boundaries in various aspects of life, including clothing.

The concept of Shatnez encompasses all garments where wool and linen are blended, thereby making the first choice accurate. It reflects the intricate details of Halacha and the importance of adhering to the mitzvot (commandments) regarding permissible and forbidden mixtures in textiles. Other choices, such as a type of ceremonial garment or a specific mourning attire, do not capture the essence of the prohibition and do not relate directly to the Halacha concerning Shatnez.