BON4 Transparent Penis Cages will fit as good as anyone because these come with 4 different sizes of silicone back-rings.
The design and light high-grade silicone material are more or less based on a wearer who appreciates a more comfortable device.
The flexible light silicone material allows you to keep the device on during your normal activities, and while wearing the BON4 it will be relatively difficult to notice under trousers.
The naturally shaped penis tube can be securely locked with our standard 15mm brass lock or with one of the individually numbered plastic seal locks. Feel comfortable while traveling or while passing a security gate.
Sizing is quite easy as the penis cages come in 2 sizes:
Those with a small or medium-sized penis select the BON4 and those with a large penis select the BON4L.
Or combine both cage sizes in 1 complete chastity package and select the BON4plus.
The ergonomic design of this chastity device allows the wearer to keep it on while showering or during a visit to the men’s room.
The BON4 Silicone is relatively easy to put on, feel free to take a look at the instruction movie on this web page.
Whether you are into orgasm control, forced or long term chastity, your penis will stay locked for as long as your Keyholder decides to do so.
BON4
Contains:
- Silicone cage 3.46″ (88 mm)
- Internal cage length: 2.5″ (65 mm)
- Cage opening diameter: 1.25″ (32 mm)
- 4 Different silicone back rings 1.57″ 1.73″, 1.89″ and 2.05″ (40 mm, 44 mm, 48 mm and 52 mm)
- 2 Nylon pins
- 2 Plastic locking straps
- 5 Individually numbered plastic seal locks
- A top quality pad lock
US$ 159.00
BON4L
Contains:
- Silicone cage 4.33″ (110 mm)
- Internal cage length: 3.46″ (88 mm)
- Cage opening diameter: 1.37″ (35 mm)
- 4 Different silicone back rings 1.57″, 1.73″, 1.88″ and 2.04″ (40 mm, 44 mm, 48 mm and 52 mm)
- 2 Nylon pins
- 2 Plastic locking straps
- 5 Individually numbered plastic seal locks
- A top quality pad lock
US$ 159.00
BON4plus
Contains:
- 2 Silicone cages 3.46″ (88 mm) and 4.33″ (110 mm)
- Internal cage length: 2.5″ (65 mm) and 3.46″ (88 mm)
- Cage opening diameter: 1.25″ (32 mm) and 1.37″ (35 mm)
- 4 Different silicone back rings 1.57″, 1.73″, 1.88″ and 2.04″ (40 mm, 44 mm, 48 mm and 52 mm)
- 4 Nylon pins
- 4 Plastic locking straps
- 10 Individually numbered plastic seal locks
- 2 Top quality pad locks
US$ 204.00
The BON4 Penis tubes are also available in Red and Black transparent
We offer:
- The US and Europe Free (FedEx) shipping (on all orders > US$ 79.00)
- One year full warranty
- Discreet packaging
- Delivery to any country
- Secure payment with

BON4 instruction movie
- Global Shipping
- FedEx International Economy (free) Please allow 3-5 days for delivery
- FedEx International Priority (US$36.00) Delivery the next business day
We offer:
- The US and Europe Free (FedEx) shipping (on all orders > US$ 79.00)
- One year full warranty
- Discreet packaging
- Delivery to any country
- Secure payment with

BON4 instruction movie
- Global Shipping
- FedEx International Economy (free) Please allow 3-5 days for delivery
- FedEx International Priority (US$36.00) Delivery the next business day
