Oster Bulb-Style Penis Pump | Raeven CORE

The Oster Bulb-Style Penis Pump from Raeven CORE is a fully manual vacuum pump with a squeeze bulb, flexible hose and clear cylinder for straightforward hands-on control.

Squeezing the bulb removes air from the cylinder and gradually builds suction, letting you control the pace manually without batteries, charging or electronic settings. The flexible hose separates the hand pump from the cylinder, making it easier to operate the bulb while keeping the chamber positioned.

The transparent cylinder lets you monitor positioning and response throughout use, while the quick-release feature gives you a simple way to reduce the vacuum whenever needed.

Oster measures 22 cm in total length and provides a 20 cm usable chamber length. The cylinder has a 6 cm inner diameter and 7 cm outer diameter, giving you clear measurements to check before choosing the pump.

The pump is made from ABS, silicone and TPE and weighs 235 g. Its fully manual design makes it a simple alternative to powered penis pumps.

For another manual option with a different pumping mechanism, compare the Bygge Trigger Handle Penis Pump, which uses repeated trigger pulls instead of a squeeze bulb.

For automatic suction, compare the Stjerna Automatic 3-Speed Penis Pump, which uses a battery-powered motor with three selectable suction levels.

If you also want to explore cock rings separately, see the Anda Silicone Vibrating Cock and Ball Ring.

Features

• Manual squeeze-bulb operation: Build suction gradually by hand.

• Flexible hose: Connects the hand bulb to the cylinder for easier positioning.

• Clear cylinder: Lets you monitor fit and response during use.

• Quick-release feature: Reduces vacuum pressure when needed.

• 20 cm usable chamber length: Clearly stated internal length for checking fit.

• 6 cm inner diameter: Useful chamber-width measurement before purchase.

• 7 cm outer diameter: Confirmed external cylinder measurement.

• No batteries required: Fully manual operation with no charging or electrical controls.

• ABS, silicone and TPE construction: Confirmed materials used across the product.

• Raeven CORE product: Part of Raeven’s manual penis pump range.

Specifications

Use, Pressure Control and Care

Apply a small amount of Slide Water-Based Lube 100ml around the pump opening and penis to help create a comfortable seal and reduce friction.

Position the penis comfortably inside the clear cylinder, then squeeze the bulb slowly to build suction. Increase the vacuum gradually rather than aiming for maximum pressure.

Monitor how your body responds through the clear cylinder. Use the quick-release feature immediately if you need to reduce the vacuum, and stop if you experience pain, numbness, coldness, strong colour change or unusual discomfort.

After use, clean the pump thoroughly with warm water and mild soap, allow all components to dry completely, then reassemble or store it in a clean, dry place.

If you are considering making a pump from household items, read Raeven’s Homemade Penis Pump, which explains the problems with uncontrolled suction and improvised pressure-release systems.

Every order is sent in plain, discreet packaging, with no product details visible on the outside.

Browse the full Penis Pumps collection to compare bulb-style, trigger-handle and automatic pumps.