PROBLEM TO BE SOLVED: To provide a cylindrical massage tool capable of urging blood circulation promotion for the lower half of users body and the recovery of male functions by converting simple compressive actions to vibrations and friction and enabling a lymph node in his groin to be self-massaged on the basis of proper distribution.SOLUTION: A cylindrical elastic material with an inside penetrating cavity comprises a slit and a groove, which are cut in from the bottom, a cavity in a side wall, a protrusion on an upper lid part, and the jutting bottom.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】単純な圧迫行為を振動や摩擦へ変換し、鼠径部リンパ節を適切な配分でセルフマッサージを可能にして下半身の血行促進及び男性機能の回復を促すことのできる筒型マッサージ具を提供する。【解決手段】中の空洞が貫通した筒状の弾性素材において、底部から切込んだスリットと溝及び側壁に空洞と上蓋部に突起物とせり出した底部を備えている。【選択図】図5