This Serta Alleene Queen-size Plush Mattress Set retails at $649.79, but is just $494.99 at Overstock.com. Features antimicrobial fibers to help reduce asthma and allergy triggers. Bedding set includes a Sertapedic plush mattress and box spring. Serta plush mattress design will give you a soft, but not too soft feel. Close