This pajama set is crafted from high-quality bamboo fiber, offering an ultra-soft, skin-friendly, and stretchy feel for ultimate comfort. Known for its excellent breathability, moisture-wicking, and antibacterial properties, bamboo fiber effectively absorbs moisture and keeps you dry, making it ideal for nighttime wear. Additionally, bamboo fiber is eco-friendly and biodegradable, gentle on the skin, and less likely to cause irritation. With its simple and elegant design, this long-sleeve set is suitable for all seasons and can be worn alone or layered with a jacket. Enjoy a peaceful night, wrapped in softness, comfort, and care. Fabric Content: 95%Viscose made from Bamboo / 5%Spandex Size Chart: Small 2-6 Medium 8-10 Large 12-14 XL 16-18 2X 18-20