Children's Dinosaur Rash Guard Short Sleeve Swim Set is available in infant sizes 0-3 Months, 3-6 Months, 6-9 Months, 9-12 Months, 12-18 Months, 18-24 Months to toddler sizes 2T, 3T, 4T to Big Kids Size 5 & 6, perfect for the pool, beach, or boating days.