Weighted pens at both ends and drop-resistant caps, full of fun.Anti-drop silicone pen cover, let you rest assured to enjoy the fun of pen writingOne's best stateJust do what you likeAnd love cannot be hiddenThe pen in his hand will turn around unconsciously Smart design and good for holding. Both sides are made of heavy metals to reach the golden balance point, thereby enhancing the balance and stability. The spinning game pen, non-slip, wear-resistant and pressure-resistant, which delicate and comfortable to hold. It is more flexible when turning the pen and adds unlimited fun.It can be used for puzzle rotate pen.Also for adult relieve stress toys pen.Bring you a little fun in your daily busy life. The centripetal force and the tangent force of the three-curved surface fit the grip properly.Lelo triangle design inspired by rotor engine principle.The rotor engine of the Lelo triangle runs for one week is equivalent to two weeks for the reciprocating engine.Anti-drop silicone pen cover, let you rest assured to enjoy the fun of pen writing Playing the spinning pen can relieve stress and add fun to study and office.The rotor engine of the Lelo triangle runs for one week is equivalent to two weeks for the reciprocating engine.Anti-drop silicone pen cover, let you rest assured to enjoy the fun of pen writing