Wayfair is discounting mattresses by up to 60% in its Holiday Flash Sale, covering memory foam, hybrid, innerspring, latex, and air styles in every size from twin to California king. One example is the Sleep by Wayfair 14″ Plush Hybrid Queen Mattress at $338, down from $458. Every mattress comes with a 100-night free trial, and name brands such as Sealy, Beautyrest, Casper, Purple, Tempur-Pedic, and Serta are part of the selection. Adjustable beds, box springs, and bed frames are also included. Most items ship for free. Deal ends November 6. Shop Now at Wayfair