I will show you the most common and most common products on the market for bigger breasts. There are also some products which are good to use but don't work for bigger boobs.
The following products are products which are made of silicone, so there are no other silicone products in the market. Silicone breast pumps, especially ones made by Purell Silicone can be bought on ebay for around the $25 price range. Most pumps are designed to pump out between 60 and 140 ml (2 to 3 cups). They are designed to be used with an automatic pump by the buyer. This is very important because most of the time it will have the pump not fully turned off. It's okay to use with a regular pump if it's not turned on. If the pump isn't turned off or the sensor isn't set off by the pump itself, it's still okay to use. This is just a very rare situation and I'm sure there are plenty of ways to fix this. What I'm saying is, a lot of people use silicone breast pumps with the wrong kind of pump or they use them and don't know it because it doesn't affect their boobs.