4 activities – designed to excel when you bike, jog, stroll, and ski (Jogging and Ski Kits sold separately). The included rain cover and sun canopy keep your child dry and shields them from the sun Integrated LED light powered by the Thule power bank 10k (sold separately) for better visibility in all conditions For increased control on steeper terrain and while running The modular seating ability means that you can choose to have one kid sitting in the middle, or two kids on either side of the trailer. Convenient one-hand recline and fully padded seats for on the go naps The redesigned FlipWing-system allows for even easier switching between biking and strolling and back, now with the possibility to flip the wheels up and down while the trailer is attached to the bike