Seobean Men's Thermal Long Johns — 92% Cotton Striped

Seobean Thermal Long Johns — 92% Cotton / 8% Spandex, Side Stripe Design

Stay warm this winter with these ultra-comfortable thermal long johns from Seobean. Made from 92% Cotton with 8% Spandex for stretch, they offer soft, breathable insulation that keeps you cozy without overheating. The side stripe design adds a sporty, modern touch that sets them apart from plain thermal pants — making them suitable for layering under jeans or wearing as loungewear at home.

Cotton Thermal Comfort

The 92% Cotton content traps warm air against your body while allowing your skin to breathe naturally. Unlike synthetic thermal fabrics that can feel clammy after extended wear, cotton absorbs moisture and keeps you comfortable through a full day of use — whether you're working from home, running errands, or enjoying outdoor winter activities.

Side Stripe Design

The contrast side stripes run the full length of each leg, adding visual interest and a sporty silhouette. Available in five colors — Black, Navy, Red, White, and Blue — this is one of the widest color ranges in the Seobean Long Johns lineup. The elastic waistband with drawcord ensures a secure, customizable fit.

Versatile Winter Layer

Wear them as a base layer under trousers or snow pants, or enjoy them on their own for cozy days at home. The full-length cut covers from waist to ankle, and the cotton-spandex blend moves with your body through bending, squatting, and lounging. Machine washable and designed to hold their shape through the season.