What is the coil gauge of the coils in the Micro-Coil Mattress Topper? May 12, 2023 14:54 Updated The recycled steel coils in our micro-coil topper are 18 gauge. Related articles What is the coil count in the Micro-Coil Mattress Topper? What is a mattress topper? What is GOTS? What is your return policy? What are the Latex Hybrid product specs?