COC 黑客甜心: through-channel construction and a local air chamber

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Measurements and accessories

The liner weighed 1.85kg, with an external length of 21cm and a channel length of 14cm. The torso form has simple coloring and limited detail. Material feel was approximately relative +0.5, grouped as +1 by the source, with ordinary stretch and slight oil release and odor. This is not standardized hardness.

A cleaning hose, charging cable and remote motor controller were supplied. No color transfer from the fitted garment was observed during short wear, but long-term transfer was not tested.

Internal construction

Disassembly revealed a plastic cover beneath the abdominal surface, an air tube and black foam. Channel texture consists of a few scattered small blocks. The liner end is glued to the motor and required substantial force to separate during disassembly. A retaining ring also prevents slipping; this does not mean routine cleaning should involve forced removal.

The air chamber occupies the abdomen, diverting the channel downward. Motor compression leaves some walls very thin, under 1cm at the thinnest point. The source flags possible pressure against the rear outer wall, without recording an actual perforation in this test.

Local suction and limitations

The channel is open through the body, but it is not directly suctioned. A separate motor tube connects to the abdominal chamber, drawing and releasing air to deform the liner. The source compares this with direct through-channel suction, which can carry liquid toward an outlet, and separate surrounding chambers, which typically deform less. These are mechanism descriptions, not evidence that this sample expelled liquid.

Actual local suction feedback was very weak; the demonstration did not show clear movement of the test model. The diverted channel and thin walls also compromise contact. The through-motor section remained hard to dry: narrow, rigid internal tubing could not be reached adequately with an absorbent drying stick. Rinsing does not establish complete drying. The source raises a possible long-term odor issue without documenting a verified timeframe.

Noise and the coarse, simple channel remained dominant. Against reference designs such as 小春日和, the source did not find meaningful improvement from the more complex air route.

The overall recommendation was 2 stars, without category scores. Weak pneumatic feedback, compromised channel routing, thin-wall pressure risks and difficult internal drying are the principal limitations. A through-channel does not automatically solve cleaning or drying.