Men's Thickened Loose Long-Sleeve Thermal Sweater

Refresh your winter wardrobe with the Mu An Men's Loose Round-Neck Sweater (Item Mu'an-580). Designed for teenagers and fashion-forward young adults, this long-sleeve pullover captures a trendy Korean and Japanese retro aesthetic, making it an ideal choice for cozy base layering or casual standalone wear.

Crafted from a high-density knit featuring 96% premium polyester fiber, this sweater delivers high color fastness, durable wear resistance, and reliable thermal retention for cold winter days. The breathable fabric traps body heat while allowing comfortable ventilation during daily activities. Cut in an unrestrictive loose silhouette with a classic collarless round neckline, it drapes effortlessly over basic tees and layers cleanly under heavy winter coats. Sourced with brand collar labels and official tags attached, it is available in four deep, versatile colorways across sizes M to 3XL.

Key features and technical specifications include:

* High-Density Thermal Knit: Durable 96% polyester knit offering excellent heat preservation, high color fastness, and long-lasting wear resistance.

* Korean/Japanese Retro Loose Cut: Relaxed, lazy-style pullover silhouette featuring a clean crewneck for effortless streetwear layering.

* Breathable Cold-Weather Comfort: Thickened winter-weight construction engineered to block out cold drafts while maintaining internal breathability.

* Product Specifications:

* Product Category: Men's Knitwear / Long-Sleeve Thermal Sweater

* Brand: Mu An (Item No.: Mu'an-580)

* Style: Korean Style / Japanese Retro / Youth Fashion (18–24 Years)

* Gender / Age Group: Men / Teenagers & Young Adults

* Material / Fabric: 96% Polyester Fiber (Polyester Knit)

* Collar Style: Collarless / Round Neckline (Crewneck)

* Sleeve Length: Long Sleeves

* Placket / Style: Pullover (Non-Hooded)

* Pattern / Details: Solid Color Fine Knit Texture

* Fit Type: Loose Fit

* Thickness: Thickened Winter Weight

* Size Range: M, L, XL, 2XL, 3XL

* Packaging & Labels: Includes Official Brand Collar Label and Hangtags

* Functions: Thermal Warmth, Wear-Resistant, High Color Fastness, Breathable Comfort

* Suitable Season: Winter, Late Autumn

* Available Color Palette:

* Navy Blue

* Dark Gray

* Black

* Coffee Color

Whether styled with loose-fit denim for campus leisure or layered under a parka for winter outings, this Mu An crewneck sweater brings simple retro charm and dependable warmth to your cold-weather rotation.