Size 3 fits my 2-year-old grandson,
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This review is from: Komar Kids Little Boys' Superman Batman 4 Piece Pajama Set (Apparel)
I bought these size 3 costume pajamas for my 2-year-old grandson to grow into. They fit now. The shirt and pants are loose but not conspicuously. The knit cuffs hold the sleeves and pants at wrist and ankles. The fabric feels comfortable and durable. The pajamas are cute on my grandson.