对子哈特 宝石术士: small flaps and large internal cavities

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The sample weighed 365g, with an external length of 14cm and a channel length of 12.5cm. Its cylindrical body retains the series' relief-patterned form, with changes mainly to the surface motif. Injection-molded material was approximately relative grade 0, with little oil release or odor and clear structural definition. Stretch was lower than the comparable cast materials referenced in the source. The grade is not standardized hardness.

Apart from four larger blocks, the channel mainly contains neatly arranged small flaps. Wide spacing and multiple three-dimensional groups leave substantial cavities. Outer walls are thick enough in section, but wall thickness cannot replace close internal contact; texture density remains low.

Flap resistance felt firm, with direct, coarse friction during movement rather than the fine enveloping contact of references such as 宫濑 or 触手. Against comparable 火炮 flap or brush-like structures, the source considered depth and complexity weaker.

Sparse texture and large cavities prevented complete fit even after air evacuation. Terminal contact was weak, with neither continuous gentle coverage nor a clear strong-intensity focus. The source's report of a dull experience and greater difficulty finishing is personal, not a medical or general functional finding.

The overall recommendation was 2 stars, without category scores. The source considered it weaker within this series, not a uniform rating for other versions. Main limitations are low flap density, cavities that prevent close fit, coarser resistance and weak terminal feedback.