Koloa Surf Co. Kauai Hawaii Logo Cotton T-Shirts in Regular Big & Tall 100% Cotton Koloa Surf Custom Logo Heavy Cotton T-Shirts. Koloa Surf Co. Wave Logo Mens Heavyweight 6.1-ounce, 100% cotton T-Shirts in Regular, Big and Tall Sizes. A reliable choice for comfort, softness and durability. Heavyweight 6.1-ounce, 100% soft spun cotton. Heavyweight 6.1-ounce, 100% soft spun cotton 90/10 cotton/poly (Athletic Heather). 98/2 cotton/poly (Ash) 50/50 cotton/poly (Dark Heather Grey) Adult Sizes: S-6XL and Tall Sizes: LT-4XLT