Sierra Sleep Advanced Twin Mattress Protector

The Sierra Sleep Advanced Protector is a waterproof mattress protector built to keep a twin mattress clean and dry without changing how it feels to sleep on. A quiet, breathable waterproof layer sits between you and the mattress, repelling liquids and helping block dust mites, so everyday spills and accidents do not turn into lasting stains or odors.

The surface fabric is designed to feel cool to the touch and to wick moisture away, which helps keep sleep temperature comfortable through the night rather than trapping heat the way a heavier vinyl cover might. Because the waterproof barrier is thin and quiet, it protects the mattress underneath without adding bulk or noise when you move.

Fit and Compatibility

This protector is sized for a standard twin mattress and is built to fit mattresses up to 18 inches thick, including deep pillow top models. It works with hybrid, memory foam, and innerspring mattresses, and it is compatible with adjustable power bases, so it is a practical fit whether the mattress underneath is new or already in use.

Key Features

• Waterproof barrier repels liquids and resists stains
• Cool to the touch, moisture wicking surface fabric
• Helps protect against dust mites
• Fits mattresses up to 18 inches thick
• Compatible with hybrid, memory foam, and innerspring mattresses, including power base setups
• Machine washable for simple, ongoing care

A protector like this is a good fit for kids' rooms, guest rooms, and anywhere spills or allergens are a concern, and it is an easy way to extend the life of a mattress you already have.

Available size: Twin.

Series: Advanced Protector (Ashley model M30901).