When purchasing a memory foam mattress topper, use the below considerations to narrow down your choices.

Density

Keep density and firmness in mind when shopping for a memory foam mattress. “Higher-density memory foam provides better support, durability, and contouring,” says Porter. How firm or soft you want your mattress topper to be is up to your personal preferences, but a softer option is best for pressure relief while a firmer layer will help with support and spinal alignment, he says. “For those who share a bed with an active sleeper, consider a thicker memory foam mattress topper that may help absorb some of the motion,” adds Lees.

Features

Each memory foam mattress topper has its own features. To find the best option, consider what’s important to you, such as cooling properties, breathability, or multiple firmness options.

Materials

Porter recommends paying attention to the material of the memory foam mattress topper. While memory foam is not an eco-friendly material in itself, some are made of hypoallergenic materials to reduce the risk of allergies, and others are CertiPUR-US® certified, meaning they meet the bare minimum requirements for avoiding potentially harmful chemicals.