Generous fit allows for layering of clothing and easy movement Dual front zippers for quick, on-the-go changes; Reinforced with extra-heavyweight nylon for seat and knees Elasticized hood with brim to shed water; Elasticized wrist and ankle cuffs fit over mitts & boots All seams are sealed and completely waterproof The item is designed to be loose fitting in order to accommodate clothing underneath and freedom of movement.The measurements on the sizing chart represent the measurements of a child of that age. The measurements do not represent the size of the item It is a guide to the parent when buying a product for their child (based on the size of their child). This item should be sized by weight given its design.