Description
Our specially designed Contoured Airlock Cup offers a way of quickly releasing the hand pump from the breast cup whilst still maintaining the vacuum and pressure. The cup consists of a high quality in-line connector which has a built in non-return valve.
This means that air will flow in both directions until the quick release button is pressed. Then, air is prevented from leaving the cup until the airlock is reconnected. The connector takes literally seconds to release. With the contoured base having a slight curve to the base of the cup which is specially designed to sit better against the natural curve of your chest.
Cup sizing guide:
| Cup Size | Inner Cup Diameter | Outer Cup Diameter |
| Medium | 10 cm | 12 cm |
| Large | 12 cm | 14 cm |
| Extra Large | 13 cm | 15 cm |
| Extra Extra Large | 15 cm | 16.5 cm |
| Size | Chest Size | Cup Size |
| Medium | 30-34 | A-C |
| Large | 34-36 | A-C |
| Extra Large | 36-40 | B-D |
| Extra Extra Large | 38+ | D+ |
Bra Size Calculator:
If you are unsure about your bra or chest size, you can use an online Bra-size calculator here or email us your current bra/chest size and we can let you know what cups will be best for you.
Please note that the above breast cup information is only a guide and if you are unsure please send us a message and we can advice you as to what size cups you need.
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