Casper Mattresses are manufactured to the highest standards and provide unparalleled comfort. Any mattress currently purchased from Casper.ca or from one of our retail stores does not contain any fibreglass. Casper customers can rest assured that their Casper mattresses are safe and contain high-quality, non-hazardous fire-resistant materials. For mattress-specific materials and care information, please refer to the label and care instructions attached to your mattress.