$21 vs $119 mattress protector showdown: Which one performs best in our 6 spill tests?

The main image shows a woman inspecting the Purple mattress Protector. Top right, an inset of a hand spilling wine on a mattress. Bottom right, an inset of a person spilling coffee on a mattress. Bottom left, a badge saying 'Tested!'.

The best mattress protectors are the unsung heroes of the bedroom — coffee in bed becomes a much riskier prospect without one. So when it comes to keeping your mattress safe from spills and stains, is it better to save or splurge on a waterproof mattress protector?

First things first: a mattress protector is a non-negotiable. When liquids get into your mattress they can cause the materials to degrade, as well as potentially supporting mold growth. If you've bought the best mattress for your sleep needs, you need to keep it safe.