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🔥 Elevate your winter game with warmth that moves with you!
The MAXHEAT Mens Thermal Underwear Long Johns Set by FITEXTREME combines premium fleece lining with quick-dry, breathable fabric and 4-way stretch technology. Designed for active professionals who demand warmth, comfort, and style during winter sports or daily wear, this lightweight, durable set features flatlock stitching to prevent irritation and a compression fit to enhance your silhouette. Perfect for hiking, running, or layering, it’s a top-ranked thermal set trusted for performance and authenticity.









| ASIN | B08J7J2Y8K |
| ASIN | B08W1Z8GRY |
| Age Range Description | Adult |
| Apparel Closure Type | Pull On |
| Apparel Fabric Stretch | High Stretch |
| Apparel Fabric Weight Class | Lightweight |
| Best Sellers Rank | #1,724 in Fashion ( See Top 100 in Fashion ) #2 in Men's Thermal Underwear Sets |
| Brand Name | FITEXTREME |
| Collection Name | Winter |
| Color | M Open Fly Set_black |
| Customer Reviews | 4.3 4.3 out of 5 stars (351) |
| Customer reviews | 4.3 4.3 out of 5 stars (351) |
| Date First Available | 4 February 2021 |
| Department | Mens |
| Fabric Type | 92% Polyester, 8% Polyurethane |
| Fit Type | fitted, fitted fitted Stretch fitted |
| Fit to Size Sentiment | Neutral |
| Garment Size Country | United States |
| Manufacturer | FITEXTREME |
| Manufacturer | FITEXTREME |
| Material Type | 92% Polyester, 8% Polyurethane |
| Neck Style | Crew Neck |
| Number of Items | 2 |
| Occasion Type | Hiking,Sports |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Size | L |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Soft |
| Unit Count | 2 Count |
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