The coils are made out of 13.75 gauge, 2-ply Polypropylene pockets, with 95% recycled steel.
Per mattress size, the number of coils per mattress is as follows:
TwinXL 27x12 = 324 coils
Queen 20x27 = 540 coils
King 27x26 = 702 coils
Cal King 28x25 = 700 coils
