The man skillful massage tool which can lead to ejaculation with moderate stimulus from the viewpoint of the correct characteristic impression the resistant impression being little in use, in addition being similar to sex is offered. The said barrel sealing opening on the one hand inside the resin make barrel of bellows structure, as the man vessel does the flame tube of insertion possible soft erasutoma alongside the medial axis, the oral edge of other opening of the aforementioned barrel as a seat arrival sits down elastically it had the valve element section which on advanced side of the aforementioned flame tube, was linked with the expansion of the aforementioned barrel and made the valve element section of the aforementioned flame tube secession possible from the aforementioned seat. Although the neck is provided in other opening of the barrel, in this neck the cup body is provided in one body there are also times when it makes accommodation possible in a state where the barrel and the flame tube are compressed inside these cup bodies and the cap body this cup body and the connecting possible cap body making provision for another body.使用に抵抗感が少なく、また性行為に似た正しい性感という見地から適度な刺激を持って射精に導くことができる男性器用マッサージ具を提供する。蛇腹構造の樹脂製外筒の内部に該外筒の一方開口を封止して中心軸に沿って男性器が挿入可能な柔軟なエラストマの内筒を挿通すると共に、前記内筒の先端側には前記外筒の他方開口の口縁を弁座として弾性的に着座する弁体部を備え、前記外筒の伸長と連動して前記内筒の弁体部を前記弁座から離脱可能とした。外筒の他方開口にネック部を設け、このネック部にカップ体を一体的に設ける一方、このカップ体と接合可能なキャップ体を別体に備え、これらカップ体とキャップ体の内部に外筒および内筒を圧縮した状態に収容可能とすることもある。
