These boxers are going to be your little one's favorite undies! Super soft bamboo with a thick elastic band to ensure the perfect fit! Sizes Available : 18 Months - 9 years Material : 95% bamboo viscose / 5% spandex A key benefit of bamboo clothing is that it is naturally hypo-allergenic, gentle on the skin, and highly breathable. It keeps skin cool in summer and warm in winter by wicking away any excess moisture. No need for both summer and a winter wardrobe – with bamboo clothing your babe will be comfortable year round. To ensure your new ff product lasts as long as possible, consider these care tips : Washing Machine Settings : Use a gentle cycle with cold water to minimize wear and tear.