Thank you for viewing! Please take a look at my other items as well ♡ Boys' Thermal Underwear Set Size: M Color: Black About this product: 【Material Composition】Made of 90% polyester fabric, it stretches in all directions and doesn't feel constricting with any movement. Breathable and absorbent, it quickly releases sweat during outdoor sports, keeping the body dry and retaining heat better. It's resistant to washing, doesn't fade easily, is wrinkle-resistant, and durable. 【Cold Protection and Insulation】The length of the long-sleeved shirt completely covers the buttocks, and the bottoms reach the ankles. The sleeves and waist fit snugly against the body, completely blocking out cold air and reducing heat loss. The fleece lining enhances the insulation function, making it soft, warm, and comfortable to the touch. 【Comfortable to Wear】The waistband of the bottoms uses a soft belt that is gentle on the skin. It has high elasticity and doesn't feel tight around the waist. It doesn't dig into the abdomen and provides a sense of stability. Tagless design, no itching, and can be worn with confidence even by children with sensitive skin. 【Size】INNERSY's boys' thermal underwear set is for ages 8-16. Size correspondence: 130=XS; 140=S; 150=M; 160=L; 170=XL; Please refer to the size chart here for details. 【Reliable Guarantee】INNERSY provides after-sales service for any problems with all products sold in our store with sincerity. We will do our best to ensure that customers can shop with peace of mind. Thank you for your understanding and cooperation. Show less * Brand new * Mercari delivery * Includes shipping Although it is brand new, it has been opened once for photography and inspection. Please understand. 1-54