The 4x Polident Overnight Whitening kit includes denture cleanser units by the brand Polident. These units are antibacterial and made of acrylic resin material. The package includes 4 white cleanser units, each measuring 6 inches in height and 4 inches in width. Manufactured with a warranty of 1 year, this oral care product is designed to effectively remove bacteria and stains from dentures while providing a bright white finish. Perfect for maintaining good oral hygiene and dental health.