This front zip model features a sticky seat for grip. The technologically advanced flexible full seat materials is not only sticky but it is comfortable. It is lined with a Dri-Lex inner skin to keep you dry and comfortable all year long. Ovation's motto for their Microweave collection is "You Never Felt So Good" and that is so true as these breeches are truly the most comfortable riding breeches we have ever seen. The Microweave fabric is a technologically advanced moisture wicking fabric, woven from micro-fiber yarns. The result it a breech that keeps your skin dry in both warm and cold climates. The high compression yarns of the fabric really support the rider. Plus the woven fabric does not cling like knit breeches and creates a much more finished look. If that was the only news on these breeches it would have been enough but Ovation has gone even further by lining their breeches with Dri-Lex. Dri-lex is a fabric that not only repels moisture but literally transports it off your body and brings it to the fabric surface to evaporate. Riders that have always felt uncomfortable in their full seat breeches swear that they no longer have sweaty bottoms. That is a breakthrough only a rider can appreciate. Medium weight.