Hulislem via Amazon offers the Cylen Home Ventilated Memory Foam Orthopedic Seat Cushion
in Blue for $26.97. Coupon code "G4SVBRMI" drops it to $13.75
. Plus, Prime members receive free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.38.) That's $56 off and tied with our mention from a month ago as the lowest total price we've seen. It features memory foam with an activated charcoal-infused bamboo core, an anti-slip bottom, removable washable cover, and carry handle.