BYRIVER Foot Massager Acupressure Slippers unisex

Brand new. This is an online store return item. I opened the box to check contents and photograph. BYRIVER Acupuncture Message Shoes (F002) Black, unisex Size Medium; Women US 9-11, Men US 7-9 Includes 5pcs replacement massage buttons Hook & loop strap design for adjusting width Distributer claims that it is designed to soothe foot/ heel pain & tension Distributer claims that it promotes better blood flow to enhance overall health CAUTION: It hurts, not to be used for more than 15min at a time