EFFECTIVELY MASKS NOISE: Beloved by generations since 1962, Yogasleep is the trusted leader in white noise machines and created our signature sound the soothing ambient sounds of rushing air. The Sea Soother gives you the Yogasleep sound in a whimsical, kid-friendly shape and masks sounds that may disturb or distract for improved sleep and soothing. FOUR SOOTHING SOUNDS: Choose from 4 curated sleep sounds that help baby fall asleep and stay asleep longer. Sound options include shushing, womb sounds, a lullaby, and our signature fan-based Dohm sound. LIGHTWEIGHT, PORTABLE, FUN SHAPE & CHILD-SAFE: The Sea Soother fits easily in a diaper bag, backpack or tote, and comes with a durable lanyard to easily hang on a stroller, baby carrier, or doorknob. The adorable fish shape will delight children of all ages. It has undergone rigorous testing following toy industry standards and is child-safe. AUTO-OFF SLEEP TIMER: Play continuously or set the optional auto-off sleep timers with two set