Allergen Pillow Protector for 12x16 Toddler Pillow Made of tightly woven yarn, providing a 9 microns barrier against allergens and dust mites, yet allowing air to flow freely. This fabric is soft, comfortable, machine washable in hot water (up to 50 times), and noise free Excellent protection against dust mites Zippered closure - designed for use with our toddler pillows sized 12 x 16