Base layer undershirt Helly Hansen

Soft, midweight merino wool base layer that keeps you warm yet breathable, featuring a comfortable round neckline and long sleeves in deep navy. Ideal for layering during cold outdoor activities.

Navy blue long sleeve merino wool base layer shirt for men, providing warmth and comfort in cold weather conditions.

Lightweight, mid‑weight merino wool crew‑neck base layer in navy. Features breathable, moisture‑wicking fabric with natural temperature regulation and a comfortable fit for layering during outdoor activities.

Men's long sleeve thermal crew neck base layer made from merino wool for warmth and comfort.

Helly Hansen Junior Lifa Merino Midweight Base Layer Set in Navy color for size 176/16. Made of a blend of wool and synthetic fibers for moisture wicking, insulation, and breathability.

Merino wool blend base layer for men with half zip and long sleeve, medium weight for warmth and comfort.

Stay warm on rugged trails with Helly Hansen’s Lifa Merino Midweight Crew, a navy long‑sleeve base layer that blends breathable merino wool and moisture‑wicking fabric for steady comfort during winter adventures.

Helly Hansen Men's Long Sleeve T-Shirt, Blue, XXL. This long sleeve base layer is made from lifa stripe material and features a crew neckline. It provides warmth and comfort while wicking away moisture to keep you dry during physical activities.

A vibrant golden yellow half‑zip base layer crafted from midweight merino wool, offering breathable warmth and moisture control for active outdoor pursuits while keeping you comfortable in XXL size.