Trojan Magnum Ribbed- Stimulation Where It Counts. <br><br> These large-sized, lubricated, and ribbed condoms are designed to provide heightened stimulation for both partners. Spiral ribbing towards the tip to increase stimulation for his most sensitive areas, plus more spiral ribbing towards the open end for her most sensitive areas. These condoms are larger than standard latex condoms for extra comfort, and the silky smooth lubricant increases comfort and sensitivity.