I am an inventor. For: Newborn to T4 for use on children's seats.. This split blanket straddles the center vertical strap separating a child's legs and wraps each leg into a separate compartment, with flap-over bootie panels. This split blanket is inherently held in place and doesn't fall to the floor when used on a baby swing. Also for use on strollers, car seats, high chairs. In adult sizes, ideal for seated seniors in a nursing home.