Our Bamboo Mattress Topper are hypoallergenic and anti-bacterial and resistant to dust mites, making them a great choice for those who suffer from allergies and sensitive skin. The cross-section of bamboo fibres in our sheets is filled with various micro-gaps and micro-holes allowing for unmatched breathability and ventilation, which keep even the warmest sleepers not only cool on sweltering summer nights but also warm throughout chilly winters.