Linen has a fibre weave strong enough to withstand stretching and friction. It can be washed in high temperatures without the risk of damage or shrinkage. Printed linen should be washed in temperatures up to 40 degrees Celsius. Linen is an airy material which allows the skin to breathe easily during summer heat. Linen also has anti-allergic and fungicidal properties, which makes it perfect for people suffering from allergies. The Natural Fabric Institute in Poznań has done research which shows that linen bedlinen enhances sleep quality, which makes us regenerated and more well-rested in the morning.