This kids endura luminite jacket is fully seam sealed making the jacket truly waterproof how waterproof a jacket is is measured in mm of water which can be held by the fabric without leaking the minimum measurement needed to pass the accepted definition of 39waterproof39 is 1 000mm all endura waterproof garments are waterproof to 5 000mm and above this kids cycling jacket is emblazoned with high visibility reflective detailing so you can be seen from any angle in low lighting con