- Description With no tight elastic and no skin chafing it has been developed to move as your child moves; with medical grade silicone at the thigh, so it won’t leave red marks. Because there are no poppers or Velcro, the Jammers are as secure and leak proof as the Happy Nappy. The most reliable leak protection swim short in the world Unisex design in sporty colors Technically designed for comfort and fit UPF50 Sun Protection
