The Redlight Pillow is a pillow obtainable in the store/pillows page in PFS. It is a red pillow with red neon around it.
Similar to the Bluelight Pillow, this pillow is bathed in a neon aura. Although, they actually know how it came into existence. Someone accidentally poured lava lamp juice into a glass case surrounding a bright red pillow. This was the product of that.