Combed Cotton: Stronger, softer and smoother fabric. This is due to fine brushes which are used to eliminate the short strands and straighten fibers.
Jersey: Stretchy knit material, usually made from cotton or a synthetic blend. Jersey materials are comfy and flexible.
Linen: This material is made from the flax plant, the surface has a textured weave that dries quickly, hence cool to wear. The downside is, it wrinkles easily.
Organic cotton: instead of usual cotton, this type of cotton uses minimal fertilizer and pesticides. In effect its usually softer and more expensive.
Pigment dyed: The coloring process of this happens outside of the fibers, hence can create a faded, worn-in look.
Pima, Supima: High-quality grade of cotton. Pima is the generic form of extra-long-fiber cotton grown in the US, Australia and South America. Supima is a trademarked name for 100% American Pima cotton. They both can resist pilling, fading and stretching, also get softer with wear.
Polyester: This type of fabric is great for resisting shrinking and wrinkels. It maintains its shape really well, however not as breathable.