This Quicksilver sleeveless muscle t-shirt is a must-have for any fashion-forward 4-year-old. The blue colour makes it perfect for any casual occasion, while the muscle fit ensures comfort and style. With a brand name like Quiksilver, you can trust that this t-shirt is of the highest quality. The unisex design is suitable for both boys and girls, and the sleeveless design is perfect for warmer weather. The t-shirt is made from high-quality materials and is sure to last for many wears. Whether you're heading to the beach or just out for a casual day, this Quicksilver t-shirt is the perfect choice.