Ribbed and dotted condoms are designed to enhance sexual pleasure by adding texture to the surface. Ribbed condoms feature raised ridges that provide extra stimulation for both partners, while dotted condoms are covered with small, raised bumps that create a similar effect. These textured designs aim to increase sensitivity and intensify sensations during intercourse, making them a popular choice for couples seeking heightened pleasure. Both types of condoms are available in various materials and sizes to suit different preferences.