Review title is Not for use if you have flat nail beds [SEP] These weren't that great for me. I think it's because my nail beds are a little flatter than usual, but I've had no problems with other dual forms. These made the nail super thick in the middle from cuticle to tip, almost a ridge nail, but super thin on the sides. I tried adding acrylic to the sidewalls, but it still didn't work well. The sides cracked and broke while filing. I knew they were going to be straight nails, but I wasn't expecting them to curve up like a slight ski jump. I can't recommend these.