The Mother&Baby Gold Collection cot and cot bed mattresses, a cleaner, fresher, healthier sleep environment. Guaranteed. The Rose Gold Anti-allergy Sprung Mattress uses the perfect combination of natures finest TENCEL fibres and Purotex anti-allergy protection to guarantee a fresher, cleaner and healthier sleep environment for your baby. Purotex is a revolutionary technology based on microcapsules filled with natural probiotics. These probiotics are 100% natural and organic. Tests and scientfic studies prove that Purotex improves allergy symptoms by reducing house dust mite allergens by 93.7%, cat hair allergens by 92.8% and dog hair allergens by 66.7%. Let your baby wake up in a healthy bed. Each mattress has a moveable waterproof membrane. The membrane sits underneath the cover and on top of the mattress base between the layers, it allows you to protect the mattress inside without the need for a waterproof sheet allowing your baby/toddler to benefit from the Purotex® anti-allergy protection and keeps your mattress clean from bacteria. All covers are removable and washable, please follow washing instructions.