The multi-season Stella Bogotá Pro Drystar® 4 Seasons Pants are engineered to deliver optimal protection, weather performance and comfort, and utilize Alpinestars technical laminated Drystar® waterproof liner that provides superior breathability and exceptional wet weather performance. The pants have a DWR (Durable Water Repellent) treatment for additional wet-weather performance. Designed with a tailored, ergonomic fit to comfortably accommodate all riding movements. 1. The Stella Bogotá Pro pants have large direct ventilation panels on the thighs for effective climate control in varying weather conditions. Featuring a lightweight micro ripstop and 600D poly-fabric construction for enhanced durability, these pants are equipped with Level 2 CE Nucleon Flex Pro knee armor and Bio-Flex hip armor for effective protection against impacts. The liner to drop year-round pants are designed for adventure riding and come with a waterproof Drystar® membrane that can be worn either inside or on top of the pants. The Liner to drop system allows the pants to be easily configured to the weather conditions and come with a detachable 100-gram thermal liner for use in cold weather conditions.