Our classic OB-T and OB-V t-shirts are all made with 100% pique cotton, with some colours being heavier than others due to the different dyeing process. The block colours are garment dyed and weigh around 85gm. Other colours weigh 120gm, this includes our Melange collection, which is yarn dyed, the piece dyed colour denim pigment and our white t-shirt in order to limit the among of transparency.