This premium foam cot mattress from John Lewis offers comfort and support, and removable, washable covers for easy care and convenience. Key features: The cover has a soft cotton-rich quilted surface to one side for comfort and support An easy care wipe able surface is featured on the other side for stress-free, speedy care Covers are removable and washable The mattress includes a water-resistant lining to protect it from any accidents. Good things to note when buying your mattress: Always check the mattress size you’ve bought is the correct one for the size of your cot/cotbed before removing from the packaging. Please ensure to always store the mattress flat or in the cot/cotbed, not upright. Due to the nature of shipping, (once the packaging has been removed and safely disposed of) please allow 24-48 hours for the mattress to settle before use. Please check that any fitted sheets used are the correct size for the mattress. Sheets that are too tight may compress the mattress, leaving a larger than is safe gap between the mattress and the cot. This also applies to sheets that may have shrunk in the wash. Always position your mattress in the centre of your cot so that there is no more than a 30mm gap between the cot and the mattress on the side, top, or bottom, once it has fully expanded. This allows the mattress to settle in use and leaves space for bedding. A gap on any side under 30mm is considered safe and acceptable.