Men’s Thermal Underwear Set – Fleece-Lined Winter Base Layer (L-4XL, Black/Blue/Gray, Box Packaging)​

Winter-Ready Warmth Without Bulk​​ A ​​high-density fleece-lined base layer set​​ designed for ​​extreme comfort in cold climates​​. ​​Key Features​​ Dralon®-Inspired Fabric​​ – ​​95% polyester traps heat, 5% spandex enhances stretch​​. ​​Plush Inner Fleece​​ – ​​160g/m² weight balances warmth & breathability​​. Seamless Design​​ – ​​Flatlock stitching prevents chafing under clothes​​. Minimalist Colors​​ – ​​Black/Blue/Gray blend with any outfit​​. ​​Gift-Ready Box​​ – ​​Premium unboxing experience (no plastic bags)​​. ​​Why It Stands Out​​ Arctic-Approved​​: Tested in ​​sub-10°C conditions​​ without overheating. Office-Friendly​​: Thin enough to wear under dress shirts invisibly. Durable Stitching​​: Resists pilling after repeated washes. ​​Thoughtful Details​​ ​​Tagless label​​ (no neck irritation). ​​Elastic waistband​​ (stays put during movement).