Long Johns 400 – Fly in Navy
Protection from the Elements
The Long Johns 400 are crafted from the Ullfrotté Original 400 g/m² circular knit material to protect your body from even the toughest elements. The Long Johns 400 have no lengthwise seams to minimize rubbing between the body, base-layers, and outer layers providing you with ultimate comfort on your adventure. The Long Johns 400 have a rear gusset to ensure optimal comfort. Both the leg cuffs and waist band are knitted directly into the garment to provide increased structure, strength, and durability while on the move.
The Ullfrotté Original 400 gram fabric is great for colder conditions! Our Long Johns 400 are available with Fly and No Fly options.
– Materials –
70% Merino Wool
28% Polyester
2% Elastane
Weight: 400 g/m²
Microns: 22.5
– Garment Care –





We recommend washing with Woolcare Laundry Detergent.