Deep Dive Into Features

[Fleece Lined Thermal Underwear]

Experience the comfort of spring all year round with our fleece-lined thermal underwear. Moisture-wicking technology creates an insulating layer that locks in heat, ensuring you stay warm and cozy even in the coldest winters.

[Selected Fabric]

Crafted from premium, international-certified yarns, our thermal underwear is made of selected natural fabrics. Our product is free from pilling, shrinking, and static. Neither bleaching agents nor chemical dyes are used, making it hypoallergenic and eliminating any unpleasant odors. Easy to wash and quick-drying, these women's thermal undergarments are both comfortable and durable.

[Light & Formfitting]

Designed for lightweight comfort and premium fit, our long thermal underwear becomes a second skin. Whether you're layering under a coat during a snowy commute, lounging at home, or hiking outdoors, our women’s thermal long johns provide both warmth and ease. No more bulky, uncomfortable layers that compromise your mobility or style.

[4-Way Stretch]

With outstanding horizontal and vertical stretch, our thermal underwear allows for natural movement. Perfect for every outdoor activity, from hiking to skiing and camping, you can enjoy the freedom to move without restriction. Whether shopping or commuting, SIMIYA thermal base layers are always at your side, ensuring your comfort remains a priority.

[Certified Durable]

Our thermal underwear is super flexible with strong extensibility, thanks to the blend of spandex. Color fastness is ensured, so your thermal underwear looks as good as new even after multiple washes. We recommend hand-washing or using a laundry bag to maintain the quality and durability of your thermal undergarments.