Bizarre shape...so. curved they do not lay against nails, not mine,mom's,niece's,friends [SEP] These look fabulous, but you cannot wear them. They are very very curved underneath, I tried 5 colors and every size and all had the same problem. There is not enough glue or adhesive stickers in the world to layer enough to fill in the gap. Therefore they stay for a day at most. We have passed them around amongst everyone I know who uses nails and they are a problem for everyone.