Used size full Costco mattress for only 7 months. Clean, no stains! Happy to share pictures if interested. Pick-up preferred (near Stanford campus), but may be able to work out a drop-off. Brand: Novaform dreamway Link to original listing: https://www.costco.com/novaform-dreamaway-8%22-gel-memory-foam-mattress.product.4000116714.html