Cycling underwear with integrated seat padding are a clear upgrade to your wardrobe, especially for long distances, and are worn by most cyclist for this reason alone. These inner shorts with seat pads can be worn under regular clothing or cycling shorts/trousers and so are usually cut slightly shorter and made of a lighter material than regular lycra cycling shorts. They are designed to be worn as underpants that offer more comfort and ventilation than the combination of tightly padded cycling shorts and bike shorts. You also gain a little more flexibility with your choice of outerwear, and so you could choose something lighter for summer days or something more casual for touring.