Should you flip or rotate a mattress? Check the model first
Not every mattress needs flipping or regular rotation. IKEA gives rotation advice for applicable models, whereas Tempur-Pedic says not to flip its one-sided beds and that rotation is optional.
A 180-degree head-to-foot rotation is different from turning the sleep surface upside down. Check the construction, comfort layers, whether both sides can be used, and the warranty before moving your mattress.