Very nice and light rain poncho. He has a tape that can be strapped around the abdomen, thus he does not or hardly flapping behind high. I bought it in "L", as some reviews have suggested, to order it possible something larger. I would also suffice "M" (173 cm), since it mainly on the sides not firmly seated in "L" and therefore in windy weather provides less protection - also due to the low weight of the material. The hood is very well (without helmet) and is adjustable by a Velcro strip.
