This mattress protector features a smooth poly surface, designed to fully encase the entire mattress, which is perfect for severe asthma and allergies, due to the anti-allergy flap, which creates a barrier against dust mites and bed bugs. All of this, whilst the Miracle Layer? protects you from other allergens, bacteria and mould.- Smooth poly sleep surface- Best for severe asthma and allergies- Completely waterproof, thanks to the unique, silent and breathable Miracle Layer?- Protection against dust mites, bed bugs, asthma and allergens- Approved by the National Asthma Council?s Sensitive Choice Program- Approved as SIDS & Kids Friendly- Fully encased-style for total protection, (for ease-of-use, use with a fitted mattress protector over the top- 10 Year product warranty- Electric blanket safe- Machine wash and tumble dryKing Single: 107cm x 204cm + 20-40cmPRODUCT CARE:Warm machine wash at 60degC. Line dry, or warm to max tumble dry at 60degC with other linens or towels. Dry thoroughly before re-use or storage. Do not bleach, iron, dry clean, or use solvents.