A superior quality cotton of 180 gsm is used to make these unisex roundneck t shirts to make you super comfortable in this summer in Singapore. It is the middle range of thickness in between of CT51 Comfy Cotton Round Neck T-Shirts Oren 160gsm (Unisex) and CT71 Superior Cotton Round Neck T-Shirts Oren 200gsm . If you are looking something in middle range of thickness, this is the best option. Otherwise you also can refer to our 76000 Premium Cotton Round Neck T-Shirts Gildan 180gsm (Unisex) series, It is preshrunk model and made with US grade.