This sleeping bag is made with a Pro-Meteo 2 Layer Cordura® nylon fabric with a double ripstop construction for abrasion resistance and durability. With an extendable hemplaceholderforcommas this sleep sack is designed for newborns to three-year-olds. The PrimaLoft® Gold Insulation uses ultra-fine fibres to trap body heat and maintain warmth. And the adjustable top provides extra cosinessplaceholderforcommas too.The double slider front zip lets you open the sleeping bag completelyplaceholderforcommas ready to tuck your little one in. Thanks to the compatible designplaceholderforcommas you can attach the sleep sack to a child seatplaceholderforcommas pushchair or infant car seat. The Convert Sleeping Bag for babies is ideal for all your family's winter trips - from outdoor walks to urban exploring.