Baby Jogger Summit X3 Weather shield is keeps your child dry even when it's pouring outside. Provides full coverage for your little one and the stroller itself for optimal weather protection. Helps keep little one protected from wind and precipitation. You can easily slide it on and off as needed, giving you total control over allergens and airborne contaminants without sacrificing a sense of openness aso the snug fit also improves stability by hugging every contour of your stroller, especially during gusty weather. It's designed with proper ventilation so your baby can be dry and safe while remaining comfortable.