The Mysteries of Sleep Book
From blue light to pink noise, Da Vinci to Feng Shui, hunter-gatherers to NASA, The Mysteries of Sleep is an endlessly fascinating grab bag of knowledge about the third of your life you spend with your head on a pillow. A lighthearted tour of the science, history, legends, and oddities of slumber, The Mysteries of Sleep is filled with magical artwork, memorable explanations, and pointers, tips, and suggestions to help you get the most out of your bedtime hours. Just try not to stay up all night reading it.
Processing — up to 6 business days. Delivery — 7–28 business days. Tracking via email.
30-DAY RETURN WINDOW. Items must be unworn, unwashed, with original tags attached, and postmarked within 30 days of delivery.
Exchange-only by default — same item, different size or color, processed within 14 business days of inspection. Cash refund to original payment is reserved for defective, wrong, or damaged-on-arrival items.
Change of mind? Return the item for store credit, then re-order separately for full flexibility.
Return shipping — paid by customer unless the item is defective, damaged, or wrong (then we cover it).
All returns are reviewed before approval — no auto-approval threshold.
How to start: Email afterglow@kremage.com with your order number before shipping anything back. We send a return authorization within 24 hours.
Damaged, defective, or wrong item? Free replacement or full refund. Email within 72 hours with photos.
Charges appear as KREMAGE.COM on your statement.
This product is manufactured by Loftie and sold through Kremage as a marketplace. Kremage does not design, manufacture, or independently test this product. Loftie is solely responsible for product safety, labeling, and regulatory compliance.
Electronics Notice: This product is manufactured by Loftie and must be used in accordance with the manufacturer's instructions. Do not modify or disassemble. Kremage does not independently test electronics for UL listing, FCC compliance, or electrical safety.
⚠ California Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. p65warnings.ca.gov
