These soft wool fleece mittens will keep your baby's hands warm and cozy on even the coldest winter days. The thick, pure Merino virgin wool fleece is luxuriously soft and perfect for any season. Merino wool is wonderful material because it is both breathable enough for summer and extremely warm for winter. The mittens feature long sleeve bands and an attached string. The mittens come in one size only, which should fit your baby from birth through around 1 1/2 years of age.