I wasn't sure what to think when I ordered these. I knew they would be big and heavy...but when there's no size chart, and not really any information, you don't what to expect. I can definitely tell you that if you wear a 36 bra, then go with an M cup. These things are massive! They also have a protrusion of roughly 5-6 inches, (going by eye while holding a ruler here)...but no more than 6. They come in a box like other from this company however, these are ones where I wouldn't mind seeing each one have its own holder, which helps them to keep their shape over the long term. Other than that...have fun with them...just be careful due to the weight.