Custom Size Sleeper Chair Mattress | Hide-a-Bed CUSTOM SIZE Sleeper Chair Mattress | Hide-a-Bed Fill out our custom sizing form below and we’ll customize a mattress to your specific dimensions! If you are human, leave this field blank.What are your mattress dimensions?Mattress Length *Mattress Width *Thickness *3"4"5"6"Mattress Cover Type *NylonVinylHow can we contact you?Customer Name *Customer Email *Phone *MessageCaptcha *reCAPTCHA is required.Submit Your Custom Size Request!