REM-Fit Halo memory foam topper review: design and setup While REM-Fit's mattresses tend to feature multiple layers of foam and springs, its Halo topper is a lot more straightforward.

Sneaker cushioning once didn’t exist. Then came ethylene-vinyl acetate (EVA) foam, an elastic material similar to rubber. Nike broke the mold, introducing air as a cushioning method in the 1970s.