Description/Taste. 
Red seedless grapes are small to medium in size and are round to slightly oval in shape, growing in tight or loose clusters depending on the variety. The skin ranges from Red to bright Red and is typically crisp, firm, and smooth.
 
Shelf Life: about 7 to 14 days refrigerated grapes in a perforated plastic bag; discard any bruised or moldy grapes before refrigerating. To extend the shelf life of grapes, do not wash the grapes until ready to eat or use them. How long do grapes last in the refrigerator? Properly stored, grapes will usually keep for about 7 to 14 days in the fridge.