thermals

In the first, a quadrotor drone was able to observe four hovering white balls while avoiding four orange balls, all while navigating an airfield rife with randomly occurring, dangerous air currents, or thermals.

We were matching in gray thermals and black pants.

Military officials searched the river with lights, thermals and night-vision goggles but did not see any other migrants trying to cross or in distress, the statement said.

Uniqlo has gained a reputation for practical clothes offered up in a number of different colours, with a focus on thermals and coats in particular.

"And at six o'clock on a January morning it was unbelievably cold - even the thermals we had on underneath our tracksuits weren't much help."