For babys first meet-and-greet with King Neptune, an accident-proof swim diaper is essential. Our Little Sol Swim Set is made from durable 83% recycled nylon/17% spandex blend with 50+ UPF sun protection. The short-sleeved top has a lap-shoulder neck for easy on/off with contrast spandex binding plus contrast sleeve, left-chest pocket and yoke detail. Bottom swim diaper has covered elastic waistband and leg opening for a secure fit; waterproof liner laminated to a soft mesh for comfort and complete leak protection for pools and streams. Top and bottom have fun, color-blocked style.