The cloak covered by the forest leaves helped them camouflage in the forest terrain, allowing them to move in stealth to a certain extent. The forest wasn't just filled with trees, but also had shrubs of various sizes and shapes. It was a dense overgrowth of a jungle, making even walking difficult.
But, since there were just the three of them, they were able to walk somehow by slipping through the gaps between the trees. And since they had to tread through such terrain, they were light on their clothes, wearing a simple cloth that gave them basic protection against insects and thorns.
That was all they wished to obtain since their priority was evasion. So, their clothes consisted of a whole fabric that covered them from head to toe, only keeping their eyes exposed. And, they wore a simple pair of spectacles atop it as protection, allowing them to move unhindered without fear of insects crawling into their clothes and giving them hell.
