Our t-shirts are made with breathable fabrics and breathable printing technology to maintain the fabric's breathable properties. The perfect combination of comfort, functionality and style to keep you cool, dry and comfortable. Detail: Style: casual, everyday, geek, programmer, nerd Material: Cotton Season: spring, summer, autumn, winter Collar type: round neck Elasticity: Elasticity Machine wash cold, tumble dry low Customization time: 1 working day Delivery time: 3-7 working days We promise 30 days returns and exchanges.