IKEA Twin Bed Frame and Memory Foam Mattress

Mattress purchased on Amazon for $265, gently used for 18 months. Used with an IKEA Malm twin bed frame with slatted base, purchased for $200. I can help with dismantling. Mattress is JINGXUN 10, 185.4L x 96.5W x 15.2Th cm. It's a medium firm mattress made of gel memory foam combined with comfortable foam and high-density foam underneath.