The Carhartt K121 Heavyweight Hoodie is an industrial-grade mid-layer with a fabric weight of 13 ounces (approx. 440 GSM). This high-density 75/25 or 55/45 cotton-polyester blend is engineered to provide superior wind-blocking and tensile strength. The use of polyester in the weave is a specific choice to minimize shrinkage during high-heat industrial wash cycles. Main seams are triple-stitched to prevent failure under lateral loads, and the cuffs and waistband are reinforced with spandex to prevent "bagging out" over years of use.
Specifications indicate that this product runs about 1 to 1.5 sizes larger than standard US retail sizing, so sizing down is generally recommended for a standard fit. The garment's dry weight can exceed 2.5 lbs, which may lead to some neck fatigue during very long shifts. While the "Original Fit" offers excellent durability, versions with higher polyester content may show higher pilling rates in friction areas. For models without the proprietary water-repellent finish, dry times can exceed three hours in standard indoor environments once saturated.
If you are looking for a heavyweight option that is slightly lighter for casual daily wear, the Hanes Ultimate Heavyweight is a 9.7 oz alternative. Browse our heavy duty plastic bins for durable storage of your work gear.
