Sinterklaas, also known as Saint Nicholas, is a legendary figure originating from the historical Saint Nicholas of Myra. The modern-day tradition of Sinterklaas is primarily celebrated in the Netherlands and Belgium, where he is considered the patron saint of children. The name Sinterklaas is a Dutch contraction of Sint Nikolaas (Saint Nicholas).

Sinterklaas is traditionally depicted as a jolly old man with a long white beard, dressed in a red bishop/'s robe and a red miter. He is often accompanied by his helper, Zwarte Piet (Black Pete), who assists him in delivering presents to children on the eve of December 5th, known as /"Sinterklaasavond/"

The tradition of Sinterklaas involves children putting out their shoes by the fireplace or window on the night of December 5th, filled with hay, carrots, or treats for Sinterklaas/'s horse. In return, Sinterklaas leaves presents in the shoes. Children also write letters to Sinterklaas, expressing their wishes for gifts.

Sinterklaas is a beloved figure in Dutch and Belgian culture, and his arrival in the Netherlands is a highly anticipated event. The arrival of Sinterklaas is marked by a grand parade, where he arrives by steamboat from Spain, accompanied by Zwarte Piet and his helpers. The parade is a festive occasion, with music, dancing, and street performances.

Overall, Sinterklaas is a cherished tradition that brings joy and excitement to children and families during the holiday season in the Netherlands and Belgium.