When sourcing leisure pajamas, the fabric composition is the most critical factor for comfort and durability. Prioritize Natural Fibers such as 100% Combed Cotton, Mulberry Silk, or Bamboo Rayon for their breathability and moisture-wicking properties. For premium markets, Modal (beechwood fiber) is highly recommended due to its silky texture and resistance to shrinkage. Ensure the fabric weight (GSM) aligns with the season: 120-150 GSM for summer and 200-250 GSM for winter flannel or fleece options.