Solid colors are 100% Cotton, Heather Colors are a Poly/Cotton Blend White lettering will go on DARK shirts (Black, Heather Charcoal, Heather Navy, Heather Red, Heather Teal, Kelly Green) Black Lettering will go on Light Shirts (White, Blush, Mint, Heather Turquoise, Soft Pink) If the image is a Full Color graphic image it is DTF = Direct to Fabric Print that will not crack fade or peel. If the design in is a single color it will be either a Screen Print, Or commercial grade HTV. We are a Woman owned and woman run company. * Fun Girls Trip Shirt: Celebrate your girls' getaway in style with this "Warning Girls Trip In Progress" T-shirt, perfect for group vacations.