Best Lightweight Thermal Sets for Women of 2025

The LAPASA Thermal Underwear Set is designed for ultimate comfort and flexibility. With its versatile base layer, you can effortlessly move indoors or outdoors while staying warm. The draping tailoring ensures a perfect fit, making it ideal for layering under other clothes. Its fleece lining helps maintain your body temperature, reducing friction against your skin and keeping you comfortable throughout the day. Additionally, the fabric is resistant to shrinking, ensuring the set retains its shape and smooth feel after multiple washes.

The SIMIYA Thermal Set offers breathability and moisture-wicking properties, ensuring you stay dry and comfortable during winter activities. Its 4-way stretch design provides excellent flexibility, allowing for a full range of motion while supporting your muscles and joints. Made from a lightweight blend of polyester and spandex, this thermal set keeps you warm without the bulk, fitting snugly like a second skin. Perfect for outdoor sports like skiing or hiking, it can also be worn as a base layer indoors for added warmth.

The Merino.tech Women's Wool Set offers a midweight design, perfect for various activities throughout the year. Made from 100% superfine Merino wool, it ensures you stay super soft and comfortable without any itchiness. Its moisture-wicking and odour-resistant properties mean you can stay dry and fresh, even during rigorous wear. Additionally, this breathable set regulates your body temperature, providing comfort no matter the season.

The Mountain Warehouse Talus Top is designed with isotherm technology, ensuring that densely packed fibres retain heat without adding weight or discomfort. This makes it ideal for cooler days outdoors. The quick-drying fabric composition means water evaporates quickly, making it perfect for holiday wear or after washing. Additionally, the moisture-wicking feature actively draws sweat away from your body, keeping you dry and comfortable. Its lightweight nature makes it easy to wear and pack, perfect for active use.

The woolcano Merino Base Layer is crafted from ultra-soft 100% merino wool, providing incredible comfort for your skiing adventures. Its non-irritating design means you can wear it all day without any discomfort. Thanks to its moisture-wicking properties, sweat and moisture are efficiently drawn away from your skin, keeping you dry during your activities. Additionally, the anti-static feature prevents annoying cling, allowing for unrestricted movement while you enjoy the slopes.

The SIMIYA Thermal Set is designed to keep you warm and comfortable during winter. Made from a soft polyester and spandex blend, this thermal underwear fits snugly, reducing heat loss while remaining lightweight. Its strong moisture-wicking properties ensure that you stay dry and free from dampness, whether you're indoors or outdoors. The flexibility offered by the 4-way stretch allows you to move freely without sacrificing comfort, making it perfect for workouts or casual wear. Enjoy the security and warmth this set provides in chilly conditions.

The iWoo Thermal Set is designed to keep you warm and comfortable throughout the winter. Made from ultra-soft materials, it offers a comfortable fit whether you're relaxing at home or layering under your outfits. The moisture-wicking fabric ensures you stay dry, while the high elasticity provides a flattering fit for various body shapes and sizes. Lightweight and breathable, these thermals allow for easy movement, making them perfect for both indoor lounging and outdoor activities like running or walking the dog.

The DOLCE ENVY Thermal Set features an ultra-soft crew neck and long sleeves, providing a comfortable base layer for cold weather. Made from a high-quality fabric blend of 80% viscose and 20% polyester, it offers excellent moisture-wicking properties, ensuring you stay dry and warm. The lightweight design fits snugly against your body without adding bulk, making it ideal for layering under both formal and casual outfits. With a wide range of sizes available, it caters to different body shapes, ensuring a perfect fit for everyone.

The YUTYTH Thermal Underwear Set offers exceptional warmth and comfort, perfect for cold days. With its soft fleece lining, you can enjoy outdoor activities like yoga, skiing, or hiking without the chill. The unique half-zipper design allows you to adjust ventilation, keeping you cosy while adding a stylish touch to your outfit. Plus, the moisture-wicking fabric ensures you stay dry and comfortable, making it ideal as a base layer or loungewear during the autumn and winter months.

The LANBAOSI Thermal Underwear Set is designed for women seeking warmth and comfort during the colder months. This two-piece set includes a long sleeve top and long johns bottoms, making it ideal for daily wear and outdoor activities such as skiing and hiking. The thermal fabric features a wicking rate that draws sweat away from your skin, keeping you dry and warm. Additionally, the soft and lightweight material ensures easy layering, while the super stretch design allows for unrestricted movement, giving you the freedom to enjoy your favourite outdoor pursuits.