The Bubzidoo wrap is designed to fit baby snugly and easily wrapping only babies arms. It is perfect for keeping baby feeling snug, settled and secure at nap time no matter where they are out and about in the car or pram. In a pram lay the Bubzidoo in first, then place your baby, belt or buckle up and then wrap baby when its time for sleep. That's right, the Bubzidoo wraps right around and over the belts or buckles so baby is safe and soundly asleep. The Bubzidoo comes in four sizes, small ( premature babies), medium (0-3 months), large (see sizing below) and now extra large (see sizing below) and in 5 bright colours as shown below. See sizing chart below for measurements.