Used but in perfect condition. smoke free home. Made of the finest quality merino wool, which provides powerful natural properties that make it ideal for year-round wear, regardless of the weather. What's more, medical studies have shown that babies sleeping in merino wool settle more quickly, wake and cry less, sleep longer, and even gain weight faster. 100% Natural Merino wool comes from Merino sheep, infused with nature’s ability to make it the perfect fiber to have against your baby’s skin. Silky soft & hypoallergenic Made of superfine merino wool that is supremely soft against baby’s skin. Regulates body temperature One of Merino’s key properties is the ability to keep a baby warm when it’s cold and cool when it’s warm, so you can be assured of the perfect temperature regulation for your little one. Warming even when wet Nighttime accidents happen, but when merino wool gets wet, it retains its warming properties. Your baby will have a comfortable night’s sleep whatever the circumstances. Ideal for layering Superbly breathable, lightweight and silky soft - perfect worn on own or layered under clothing or a Woolino Sleep Bag. Certifications Setting the standard for textile safety, from yarn to finished product, bearing the OEKO-TEX® STANDARD 100 certified (23.HUS.59156, Hohenstein HTTI) this product has passed safety tests https://www.woolino.com/products/bodysuit-baby-onesie-long-sleeve-merino-wool-blue