The Perfect Noggin is the only infant resting surface with an adjustable, anatomically-correct contoured surface to ensure that your infant's head stays round and symmetric during the critical first few months of life. The firm dedicated surface has no loose or soft components, and unlike dangerous soft plagiocephaly pillows or repositioning devices that can create unhealthy and potentially hazardous neck flexion, the gently elevated base and recessed head rest of the Perfect Noggin maintains the safest and most ergonomic head-neck-torso alignment for optimal breathing. The foam liners and fitted cotton cover safely maintain the most ideal and comfortable sleep position for every infant. With 5 peer-reviewed clinical studies to support its effectiveness, the Perfect Noggin is the best resting surface you can buy for your baby at any price. The Perfect Noggin 2.0 is intended for use in infants 0-6 months of age (adjusted for prematurity). It can be used WITHOUT SUPERVISION until your infant is rolling BACK TO BELLY OR SIDE in the product; USE THEREAFTER MUST BE SUPERVISED BY AN ADULT. PerfectNoggin measures 30 inches in length and 14.5 inches in width and has a 3.6 degree slope to the surface.