Softer - Better Insulator - More Comfort - Circular Knit If you are planning to spend any time outside during the cold winter months, it is best to dress appropriately. You can start with this Indera polyester thermals. This thermal shirt is designed by Indera Mills formally Coldmaster so you know right away it is designed for comfort. These Indera thermals are made from a 65% cotton 35% polyester fabric blend, meaning it is more comfortable and softer than an ordinary thermal underwear. The winter thermal clothing Indera designs is made with both comfort and utility in mind. When it comes to polyester thermal underwear only Indera knows how to design thermal shirts which not only protect, but also swaddle you in comfort. Thermal wear men use for work and play must be rugged and above all else, comfortable. You can count on both when you pull on this circular knit Indera Mills thermal. Don't trust your comfort to anyone. When you need thermal underwears that do their job and cradle you in comfort, you need an Indera thermal.