Blissy Mulberry Silk Pillowcase

Almost none in the silk: both are 22-momme grade 6A mulberry. Blissy costs about half, adds a hidden zipper (Slip uses an envelope), OEKO-TEX certification, more colors and a 60-night guarantee. Slip counters with the original-brand cachet, a scrunchie bundle and marginally finer finishing. If you want the identical silk with a better closure and your money back if you hate it, Blissy wins. Buy Slip only if the name itself is the point.

This is the honest value question. Both are true 22-momme mulberry with a hidden zipper. ZIMASILK is roughly $20 cheaper for functionally the same sleep surface. What your extra money buys with Blissy is OEKO-TEX certification, a bigger color selection and the 60-night guarantee. If a formal return window and certification give you peace of mind, pay for Blissy; if you just want real 22 momme at the lowest price, ZIMASILK does the same job.

Yes, and it's the strongest reason to start here. Silk is a personal, tactile purchase — some people love the glide, some miss the grip of cotton. A 60-night money-back window lets you sleep on it for two months and send it back if it's not for you, which no value brand offers. For a first silk pillowcase, that safety net is worth a few dollars over a cheaper case with no returns.

It means the fabric and its dyes have been lab-tested against a list of harmful substances and passed — reassurance that what's against your face every night is clean. It's most meaningful if you have sensitive or acne-prone skin, or you're buying a dyed color rather than natural. It doesn't make the silk perform better; it certifies what's in it. An undyed natural case like Alaska Bear's sidesteps dye concerns a different way.