The ideal topper for your king mattress! With a combination of bamboo fabric and microfibre filling, this mattress topper offers ultimate comfort. Its fully-fitted stretch skirt is designed for a snug, reliable fit fot all mattress types up to 4cm thick. It's also HealthGuard treated to be anti-microbial and dust-mite resistant to suit those with allergies. It features down-like cluster puff fibre fill for extra comfort and support.