What is it? It looks like hard plastic. iFixit calls it fabric, but it seems hard, firm. I tried to shine a 700 lumen light inside the HomePod and it was impervious. Zero light went in a reflected out. <<Slicing through the thick, wiry 3D mesh, we find a secondary, internal fabric sleeve. This thinner, more flexible sleeve is trapped under the top, so it stays put for now.>> Thoughts?? The inner "flexible" sleeve they are reffering to - it it the fabric we see connected to the outer mesh above, and the inner hard plastic cyinder? I think so. The cylinder they used a hacksaw to get through. Why would Apple trap the air like this? I mean, it sounds good, but what if it sounded better at the expense of fragility?