This short top ends at the waistline and just above the navel, exposing the midriff. The fabric used to make crop tops is pure cotton, a soft and comfortable material that is breathable and absorbs moisture well. Cotton crop tops are versatile and can be dressed up or down depending on the occasion. They can be paired with high-waisted jeans or shorts for a casual look, or with a skirt or dress pants for a more formal outfit. Cotton crop tops are popular in the summer months due to their lightweight and breathable nature, but can also be worn year-round as layering pieces.