★【NATURAL SILK】Silk long underwear is made of pure murberry silk knit fabric,soft,lightweigh and smoothly, good breathability and moisturizing. ★【SKIN CARE】Silk protein is one of the best underwear materials,this men's long johns is very friendly to your skin,silk is the most hypoallergenic of all fabrics,anti-static properties,the perfect choice for sensitive or allergy-prone skin, take care of your body.It's a great gift choice for men. ★【STYLE】2 pieces (top and bottom )thermal underwear sets ,the elasticity of knitted fabrics will be integrated with you,just like your second skin,make you feel free and comfortable.,great to be Wear Alone at Home ,or as a thermal long underwear for sleep,or as a thermal silk base layer Under his Clothes ★【SIZE OPTIONS】To ensure comfort and a good shopping experience, avoid returns (please ensure suitability for resale),we recommend that you check the style and size details（Refer to size image）before purchasing. ★【CARE】 Please use neutral detergent，washes well in machine on gentle or hand wash in normal temperature water ,then air dry.do not use bleach. ★★★This men's silk long underwear is made of pure natural knit mulberry silk,soft,lightweigh and smoothly,silk is very friendly to his skin, good breathability and moisturizing, and is beneficial for skin health，men silk undergarments will be integrated with him,just like his second skin, keep him healthy and warm,great to be Wear Alone at Home ,or as a thermal long underwear for sleep,or as a thermal silk base layer Under his Clothes.give him a comfortable experience. It's one of his best care.