Never lose another sock. Featuring our two-part adjustable closure system that remains secure on your baby's feet and grows with them. Intentionally designed, organic cotton + bamboo thermal fabric keeps your babe cozy, while also giving them the freedom to play. 6m+ has extra grip on soles for those first wobbly (and adorable) steps. Fabric: 67% viscose from bamboo, 28% organic cotton, 5% elastane Care: Machine wash on low or delicate. Dry on gentle/low or line dry.