UPF Protection: Certain T-shirt and shorts sets offer built-in UV protection, making them ideal for sunny days. These sets help shield babies' sensitive skin from harmful UV rays, providing an extra layer of sun protection when outdoors, Long-Lasting Quality: Many T-shirt and shorts sets are designed with reinforced stitching at key stress points like the seams, hems, and crotch area to prevent wear and tear from active movements, ensuring the set holds up through multiple washes and lots of playtime, Keeps Baby Dry: Many baby T-shirt and shorts sets feature moisture-wicking properties that draw sweat and moisture away from the body, keeping babies dry and comfortable even during active play or warm weather.