The craftsmanship of Elves displayed their subtle, instinctive control of magic. Lembas, a food given to the Fellowship by the Elves of Lothlórien, was capable of keeping a traveller on his feet for a day of long labour. Their hithlain rope had properties ranging from being an excellent material to frankly magical: it was strong, tough, light, long, soft to the hand, packed close and unknotted itself at spoken command. The rope was made from the bark of mallorn trees, and the material was possibly also used to make elven-cloaks. The Hobbits wondered if the cloaks that the Fellowship received from the Elves were magical. The Elves did not confirm this; Galadriel herself was confused about Sam's use of the word when explaining about her mirror, not least because the word could also mean the deceits of the Enemy, but she said that the cloaks helped to keep out of the sight of unfriendly eyes. This was confirmed by the subsequent experiences of the Fellowship, where the cloaks provided extraordinarily effective camouflage. When Aragorn, Legolas, and Gimli stand up, after lying hidden in the grass of Rohan with their cloaks, and call out, the Marshal of the Riders of Rohan, Éomer, astonished, starts to question them: