The box part is stretchy.
It is comfortable to use as it does not get stuffy easily.
This material is wrinkle-resistant even without ironing.
You can easily lay the sheets on the mattress by yourself. Model number: FSB-90195W
Color: White
Size(mm):900×1950
Material: Outer/lining: 100% polyester, middle: polyurethane sheet
Washing method: Washable/dehydrator/dryer (150℃ or less)
Box type
