Gotta hand it to the Mattress Firm. We purchased a new mattress over Memorial Day weekend, taking advantage of the sale(and negotiating a significant additional discount and free delivery). They delivered the next day as promised, on time, professionally and courteously. But after 3 days, my back and hips were so sore I couldn’t sleep on it any longer. We returned to the store, picked out a new mattress per their 100-day guarantee, and without any hassle, questions, reluctance, they allowed the return and gave me the same negotiated deal on a less expensive mattress. I was literally in and out of the store in 30 minutes. Great work, Mattress Firm.