Extra deep for ultimate comfort, the quilted cover features internal walls to ensure the gently supportive filling stays in great shape and is always plump. 5cm depth for ultimate cosiness and support so you can sink into cloud like comfort and experience a deeper sleep. The Silentnight Deep Sleep Ultimate Mattress Topper is covered in a luxuriously soft and breathable quilted cotton, for superior comfort. The topper provides gentle support and adds another layer of comfort to your existing mattress as well as helping to refresh and rejuvenate it. The Silentnight Ultimate Deep Sleep Mattress Topper comes with a 2 year manufacturer\'s guarantee for peace of mind. The topper is hypoallergenic which means it\'s kind to skin and does not include any contents likely to cause allergies, it\'s also machine washable so you can keep enjoying an ultimate deep sleep. Silentnight are the UK\'s #1 sleep superbrand with over 75 years\' experience in creating products that offer solutions for every sleeper.