BSW Men's NASA Space Astronomy Insignia Shirt Want authentic BSW? If it doesn't say "Ships from and sold by BestShirtWorld" it's NOT authentic. BSW only sells direct :) Designs are SUPER SOFT and lightweight. Professionally printed - no Iron-on transfers We use super soft combed and ringspun cotton! These shirts are LIGHTWEIGHT and have a super tight weave that makes them feel silky soft. Our shirt quality sets us apart from the competition; you're going to love them! *Excludes Size 5XL, These shirts are Medium weight cotton. Fast, tracked shipping and a 30 day return and exchange policy-- Please contact us for details. Please see our size picture chart for accurate sizes. Click on the 2nd picture on the left for details.