The RefrigiWear Heavyweight Mid-Layer Thermal Top adds 7–15°F of extra warmth, making it the perfect winter base layer for cold or industrial environments. Made from a 92% polyester and 8% spandex 4-way stretch blend with 240g fabric, it moves with you while locking in heat. A raised crew neck, brushed lining, and flat seams enhance comfort and protection. Available in sizes S–4XL, this durable thermal top helps you stay warm, focused, and ready to tackle tough jobs in freezing conditions.
RefrigiWear Heavyweight Mid-Layer Top - Maximum Warmth & Flexibility for Extreme Cold
The RefrigiWear Heavyweight Mid-Layer Thermal Top adds 7–15°F of extra warmth, making it the perfect winter base layer for cold or industrial environments. Made from a 92% polyester and 8% spandex 4-way stretch blend with 240g fabric, it moves with you while locking in heat. A raised crew neck, brushed lining, and flat seams enhance comfort and protection. Available in sizes S–4XL, this durable thermal top helps you stay warm, focused, and ready to tackle tough jobs in freezing conditions.
- MEN’S THERMAL LONG-SLEEVE SHIRT: Our heavyweight thermal underwear for men is the perfect base layer to keep you 7–15 degrees warmer. The stretchy thermal shirt can be worn close to the skin for your first layer of warmth, and it moves with you as you work in freezing weather.
- COMFORTABLE MEN'S UNDERSHIRT: This long-sleeve top for men is made from a strong and supportive 92% polyester and 8% spandex fabric blend for optimum stretch. The fabric has a 240-gram 4-way stretch that gives a close, comfortable, non-constrictive fit for all-day warmth and movability.
- EASY TO WEAR: Easy to put on or take off, this thermal undershirt for men has a soft brushed lining for added comfort. It features flat seams for a low-profile fit that minimizes friction as you build warm layers to stand up to any cold work environment.
- THE PERFECT FIRST LAYER: Easily withstand freezing temperatures with this thermal top. Each top features a classic raised crew-neck collar for extra protection, helping keep the warmth in and the cold out. An essential when it comes time to dress for the cold, this shirt is available in sizes S–4XL.
- REFRIGIWEAR: Since 1954, RefrigiWear has innovated cold-weather gear that helps you focus on your job while you maintain warmth and safety. Let us help you own the cold with our line of insulated and thermal clothing and equipment designed to protect you from freezing conditions.
- Sizing Instructions: For the most accurate fit, take your measurements over the base layer of clothing you intend to wear with this RefrigiWear gear (such as thermal underwear, jeans or a sweatshirt) and refer to the size chart for this product.
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RefrigiWear makes some of the world’s toughest, most dependable garments for protection from the cold. We manufacture it with your warmth, your comfort and your safety in mind—for work, play and everyday use. For more than 70 years, RefrigiWear has put our garments through some of the harshest working conditions known to man…from freezing temperatures in the food industry to men and women working on pipelines sub-zero conditions. We have also oufitted consumers living and working in cold conditions with garments ranging from our iconic Iron-Tuff Collection to our best-sellers in the Signature Collection.
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