The Bunkie mattress by Symbol looks like a mattress originally designed for bunk beds, as indicated by the name. Most bunk beds for adults are Twin size. However, the Bunkie is also available as Full.
The Bunkie is also an institutional mattress, made for healthcare facilities, correctional institutions and schools. It is also carried by at least one rental store, Rent-2-Own (R2O), a chain based in Ohio. Here it may be intended for children and youth.
Bunkie is an innerspring mattress with a Spectex cover. Spectex is a liquid-proof material made by Spec-Tex for use on beds. It is used on youth and institutional mattresses to protect them against spilled beverages and bedwetting.
The padding in the Bunkie is not disclosed. However, most Symbol innersprings are foam encased, including top and bottom. Since it is designed to be economical for institutional uses, it is probaly two-sided, meaning it can be flipped periodically for extended wear.
R2O's listing has a warning not to use the Bunkie with "Bedroom Dist. beds." Though this is understood in the context of R2O rentals, it may mean that this mattress should be used on a solid surface.
Symbol Mattress Bunkie
Symbol Mattress Company
Symbol Mattress, PO Box 6689, Richmond, VA 23230, (804) 254-1711, firstname.lastname@example.org
Foam-encased innerspring core, padding, waterproof cover
Foam encasement and perimeter rod
Spectex liquid-resistant fabric, seams sealed to be bed-bug proof
not stated, but solid surface
Not specified - ask retailer
Prob 5 years
Keep in sanitary condition, and provide proper foundation