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This is Purple's waterproof mattress protector in Twin XL, made for dorm and adjustable-bed sizes. It uses a stretchy, quiet waterproof layer rather than a crinkly plastic sheet, and the deep pocket is cut to fit today's thicker mattresses. At $139 at Lowe's as of November 7, 2026, it is the only new price listed, so there is no cheaper new option to compare against right now.
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Lowest price we've seen: $139.00 on Nov 7 at Lowe's. Tracked across 1 store since Nov 7.
Owners of Purple's waterproof protectors generally report a quiet, stretchy fit that stays put and does not feel like plastic. Most complaints center on price and on warmth building up under the waterproof backing.
