Waffle Knit

Waffle knit, also called thermal or honeycomb, raises a three-dimensional grid of small recessed squares across the cloth, and those little pockets trap a layer of warm air against the skin. That makes it the classic fabric of thermal underwear, henley shirts, and waffle robes, warm for its weight and quick to dry. The same waffle structure is woven as well as knitted, and the name in both cases simply borrows the breakfast food's grid of square wells.