Elvie Stride 2 | Double Electric Breast Pump - Hospital-grade Suction - Wearable Breast Pump - Breast Feeding Essentials. What's the difference between Elvie Stride and Elvie Stride 2? Elvie Stride 2 is an evolution of our hands-free pump, Elvie Stride. It offers the same hospital-grade suction and app connected control that you love, now with a better fit, better feel, and better flow.* This includes redesigned soft silicone cups for increased comfort and comes with six sizing options in the box, ensuring a fit for 99% of nipples.*