Fall for Armor-lux underwear! Discover kapok, a natural fibre from the fruit of the kapok tree, with insulating and thermoregulatory properties. Men's Long Johns Wide elasticated waistband Button fastening Slim-fit 1x1 stretch rib Warm, thermoregulating knit Absorbent and breathable cotton Materials: 85% cotton from organic farming 15% kapok The model is 1.83m tall and is wearing a size 4.