וּמְעִ֤יל קָטֹן֙ תַּעֲשֶׂה־לּ֣וֹ אִמּ֔וֹ וְהַעַלְתָ֥ה ל֖וֹ מִיָּמִ֣ים ׀ יָמִ֑ימָה בַּֽעֲלוֹתָהּ֙ אֶת־אִישָׁ֔הּ לִזְבֹּ֖חַ אֶת־זֶ֥בַח הַיָּמִֽים׃
Rashi on I Samuel
His mother would make for him a small robe. From year to year.
Metzudat David on I Samuel
Every year she brought him a new coat, according to his body (size) that grew every year