Within the centre of the pillow is an ergonomically shaped foam core which has been designed to support your head and neck, keeping it at just the right position to improve your breathing. This in turn can help to reduce snoring. The foam is surrounded by hollowfibre, so the pillow is soft, but supportive and is ideal for people who sleep on their back or side. Cleverly designed to help reduce snoring. Whilst we don't claim to cure your snoring completely, the Silentnight Anti-snore Pillow can help to reduce snoring, or your levels of snoring. Tested by the British Snoring & Sleep Apnoea Association who found the pillow reduced snoring frequency and volume by approximately 50%. Silentnight are the UK's most trusted sleep brand with over 70 years' experience in creating products that offer solutions for every sleeper. REDUCE SNORING: Designed to help reduce snoring, the clever ergonomically shaped foam lies within the fibres of the pillow to encourage improved breathing. TRIED AND TESTED: Tested by the British Snoring & Sleep Apnoea Association who found the pillow reduced snoring frequency and volume by approximately 50%. MEDIUM SUPPORT: The pillow is suitable for back and side sleepers. HYPOALLERGENIC: This product does not contain any materials likely to cause allergies. QUALITY GUARANTEE: 2 year manufacturer's guarantee.