Viscose from bamboo is the perfect choice for a travel shirt because of its performance features. Bamboo is also very durable and wrinkle-resistant, so the garment will withstand being stuffed in luggage or rough treatment while traveling. How is this bamboo t-shirt better than a cotton one for travel? You can wear a bamboo shirt all day and feel perfectly fresh, or pull it out of a packed suitcase without fear of a wrinkle-nightmare. What size should I get for this travel shirt?