[It's pretty satisfying that he's so jazzed about the whole thing. Rose certainly looks pleased with herself.]

It should be full-body protection against anything that would harm the wearer. I'm not yet certain how much it can withstand, but my test swatches fell apart once they reached their limits. The magic is so closely interwoven with the yarn that depleting it destroys the weave.

[He's not telling her to stop despite the warning, though, so she chucks the second book. It too falls away with a scattering of sparks.]