Grundens Grundies Thermal Layer Underwear

NOTE: Size L: estimated availability in 2026.

The Grundéns Grundies Thermal are high-quality, warm mid-layer pants specifically designed for cold and damp conditions.

The Grundies™ Thermal pants are heavy-duty fleece pants that provide warmth even when wet. The stretchy fleece pants feature HeiQ™ odor-control treatment, which combats odors during long, demanding days.

The tapered leg design fits comfortably under deck boots, overalls, or waders, and zippered hand-warming pockets provide a convenient source of warmth.

An excellent choice for anglers, hunters, and outdoor enthusiasts who value comfort and functionality.

• Heavy-duty stretch fleece with temperature-regulating properties

• Tapered legs, designed to fit under deck boots and waders

• Zippered hand-warming pockets for secure storage

• HeiQ™ odor-control treatment