I lovelovelove my Divacup and try to keep one in my purse at all times because my cycle is irregular. I'm afraid of the wear and tear on it from being in my bag in the flimsy bag it came with. I'm looking online for a breathable case (preferably a hard case) and came across these silk Chinese fortune cookie-esque hard cases lined in fabric. They're super cheap and I'd ideally buy a few as backups. Do you think these are breathable or would ruin my cup? Should I also invest in a bunch of cheap muslin drawstring bags?