Alan Walker Musical T Shirts Fabric : 180gsm, 100% bio-washed cotton t-shirt. Material Care: T-shirt may slightly shrink in first wash as it is cotton and it is normal. Printing Material : We use VINYL to print our designs. Washing Care: Wash inside out, machine wash, use Normal cold water & mild detergent, colour may slightly bleed in first wash. Iron Care : Iron inside out, Do not Iron on Print