10 Best silk thermals women 2025 in the United States

The Grenasasilk Women's Silk Long Underwear is made from 100% natural mulberry silk, which is known for being exceptionally soft, lightweight, and breathable. This makes it an excellent option for those who prioritize comfort and have sensitive or allergy-prone skin. Mulberry silk is hypoallergenic and has anti-static properties, contributing to its skin-friendly nature.

The product comprises a top and bottom set, designed to fit like a second skin and provide an extra layer of warmth in cold weather or serve as comfortable sleepwear. The material quality is top-notch, ensuring both comfort and durability. The knit fabric’s elasticity ensures a snug but comfortable fit, adapting well to various body shapes without feeling restrictive. However, sizes should be checked carefully before purchase to ensure the right fit and avoid the inconvenience of returns. The seam construction is sturdy, which should help in maintaining the garment's shape and integrity over time.

Care instructions are straightforward: the set can be machine-washed on a gentle cycle or hand-washed in normal temperature water and should be air-dried. Avoiding bleach is recommended to maintain the fabric's quality. One potential drawback is that silk, being a delicate fabric, may require more attentive care compared to synthetic materials. Additionally, as imported silk underwear, it may come at a higher price point. Ideal for women seeking high-quality, comfortable, and skin-friendly thermal wear, this product stands out but requires mindful upkeep.

The Terramar Women's Thermasilk Pointelle Pant in Natural and Medium size offers a lot of comfort and warmth, being made from 100% filament silk. The material quality is top-notch, ensuring that the pants are both extra soft and ultra-comfortable. Weighing only 1 pound, they are light and easy to wear, making them perfect for layering during colder months. The fit is enhanced by a comfort stretch waistband which keeps the pants snug against your body without feeling restrictive. However, it's important to refer to the size chart to ensure a proper fit as sizing can sometimes vary.

The seam construction appears to be well-crafted, further contributing to the comfort and durability of the pants. These pants are easy to take care of, with machine wash instructions, saving you time and effort. The additional feature of UPF 50+ protection is beneficial for outdoor use, offering some protection against the sun. Terramar's Climasense 1.0 technology is another highlight, helping to regulate temperature and keep you dry and warm in various conditions. The main drawback might be the limited variety of colors and sizes available, depending on stock.

These thermals are well-suited for anyone looking for high-quality, comfortable, and functional silk thermal pants.

The METWAY Women's Silk Long Johns set is made from 100% natural mulberry silk, known for its softness, smoothness, and lightweight feel. This material provides excellent breathability and moisture absorption, keeping you comfortable throughout the day. Since mulberry silk is hypoallergenic and gentle on the skin, this thermal set is a good choice for those with sensitive skin or allergies.

The fit is designed to be snug and stretchy, almost like a second skin, making it ideal as a base layer for added warmth in cold weather without feeling bulky. The set includes both a top and bottom, giving you full coverage for winter layering. For care, it requires gentle washing with neutral detergent and air drying, which is fairly standard for silk but means extra care compared to machine-washable synthetics.

This silk thermal set is well-suited for women looking for a luxurious, comfortable base layer that’s gentle on skin and lightweight, though it requires careful handling during washing and drying.