Pure merino wool fitted sheets. With these wool fitted sheets, your little one will be warm and comfortable. Due to the breathable effect of wool, they can be used all year round. This 100% pure merino wool sheet keeps you warm all night long, ventilates well, is moisture-regulating, natural and durable. For a safe feeling and therefore a better night's sleep. Thanks to the elastic straps, it provides a perfect fit around the mattress! Need a different size? Let us know!