This Monnëka t-shirt, with sun protection, has been created with a special fabric that blocks 97.5% of all harmful UVA and UVB rays. Sizes XS = Extra Small. For children 12 to 18 months. Chest 18cm Height 80/86cm S = Small. For children between 2 and 3 years. Chest 22cm Height 92/98cm M = Medium. For children between 4 and 5 years. Chest 25cm and Height 104/110cm Features Composition: 80% nylon, 20% spandex UPF 50+ fabric Flexible and comfortable Flat seams to prevent skin chafing Side zipper for easy wear Quick-drying, lightweight, and breathable Machine washable at 30º, delicate cycle Can be ironed at low temperature Not suitable for tumble drying Complies with EN 13758-2 WARNING: The use of this swimsuit never replaces the use of sunscreen, and children's sun exposure should be avoided during peak sun hours.