Columbia Big Boys' Tidewater Short Sleeve Shirt 100% Polyester Machine wash cold gentle, wash separately, do not bleach, tumble dry low, remove promptly, iron low no steam, do not use fabric softener, if present do not iron decal, do not dryclean When it comes to summer, nothing beats a long day on the water with your little guy. keep him comfortable and protected in this sporty, made-for-summer t-shirt complete with built in upf 50 sun protection and quick-drying superpowers. advanced evaporation technology will ensure he stays dry and cozy as he transitions from waves to playground and back again. Omni-shade upf 50 sun protection Omni-wick advanced evaporation Quick dry