Red Grapes have hard skin on the outside, but a sweet, juicy, and crisp inside. This juxtaposition allows for a sensational, refreshing bite. Red seedless grapes range from light red to deep purple-red, depending on the variety. They have round or oblong, medium-sized berries and are crisp, sweet, and juicy, sometimes with a hint of tartness. Grapes that are eaten fresh are called table grapes. They come in both seeded and seedless varieties. Red table grapes come in many varieties, some with colorful names like Scarlet Royal and Flame.