This shirt really carries some weight: Mase of 300 g/m2 Heavy, durable cotton, the T-shirt heavy e.s.iconic is a true heavyweight champion. The sturdy fabric is significantly heavier than typical T-shirts, which are typically around 180 - 200 g/m². This Heavyweight T-shirt combines the comfort of a sweater with the flexibility of a T-shirt, providing a light extra layer of warmth in cooler places where a thin shirt might leave you feeling chilly. The generous and relaxed fit perfectly completes the cool outfit. Both dedicated T-shirt and sweatshirt wearers will enjoy this perfectly balanced hybrid garment.