Our Pearl Weave - Series I is a great year-round gi because it is extremely lightweight due to its custom tight weave pattern. The gi doesn't have the traditional bulky gi feel. It has a less constraining fit which allows for greater flexibility. The jacket is custom tailored with a multi-fabric bottom hem as well as a reinforced collar, sleeves, and arm pits to enhance durability. The back consists of a single piece of fabric, unlike most gis which are made up of two or three joining pieces of fabric, allowing greater durability, faster drying, and enhanced comfort when working from the guard. Another cool feature is that all Series I Gis have a hidden mouth-guard pocket inside of the jacket.