The Baby Jogger universal liquid holster is designed to fit most round and square tubing so it'll fit most pushchairs, strollers, wheelchairs and more. The self-levelling holder sways with the motion off the stroller, so it helps to avoid spills. Ideal for drinks when you're out and about. Please note: This beverage holder is compatible with all Baby Jogger pushchairs, except the City Select and Switchback models.