Size 2T converts to 3T girl/boy- This winter jacket features Columbia’s innovative Outgrown™ system, which allows the outerwear to adapt to your child's growth spurts and last for multiple seasons. Built directly into the lining of the sleeves is a hidden, contrast-colored thread that can be easily snipped and pulled apart. Once unraveled, the sleeve cuffs instantly extend by an extra 1.5 inches in length, seamlessly converting the jacket into a larger size without losing any of its insulated, weatherproof protection. It is the perfect, budget-friendly design to ensure your toddler gets extended wear out of their favorite snow gear.