The phrase "a cloak that" is correct and usable in written English.
It can be used when describing a specific type of cloak or garment that has certain characteristics or features.
Example: "She wore a cloak that billowed dramatically in the wind, adding an air of mystery to her presence."
Alternatives: "a garment that" or "a covering that".
Even before J. K. Rowling came up with the idea, Guinness dreamed of wearing a cloak that would render her invisible.
At the port entrance, a memorial depicts a mermaid ascending from the water, complete with a cloak that includes an oil rig.
Creating a cloak that exactly follows the shape of the object it is intended to hide is hard because curve cloaks are hard to make.
The opera's Queen of the Night will wear the sky attached to her head and a cloak that will fill up the whole set.
In a particularly interesting passage, she almost accuses herself of hypocrisy: "The smile is a mask or a cloak that covers everything.
We do it with the science of materials — designing a "cloak" that can make light curve around an object, and then emerge just as if it had passed in a straight line through space.
Two sported the long beards sometimes worn by Islamic militants and one wore a chèche, a long cloak that can be draped like a veil and a turban in the Sahara to keep the ever-swirling desert sand at bay.
Cyrus wore a glittering cloak that made her resemble a tropical bird.
"We bring back things the next year," Mrs. Pennoyer said, modeling a brown cloak that formerly belonged to a dear deceased friend.
For confessional writers, it is a safe forum for candid self-expression and a magic cloak that makes it easy to disappear into the crowd.
One of Harry's presents, from an anonymous donor, is an Invisibility Cloak that belonged to his father and also a flute by Hagrid.
