Universal bag model, specially designed to adapt to any stroller. Its new harness system achieves a better adaptation to all trolleys. The zippers with double carriages, offer greater comfort to open the bag and remove the child. Great support to the trolley by means of the highly elastic rear rubber, upper fastening strips, velcro straps in the lower area of the seat, and the transverse strap in the lower part of the feet ensures that the bag is always perfectly positioned. The protection of the feet ensures that the bag is always in perfect condition.