Hands Free Wearable Cups For On The Go! 24 mm | 28 mm - Both Pairs Included! Phthalate Free Food Grade Silicone, BPA Free. Closed System, Portable. Connect To Your Electric Pump. Anti-Backflow Protection, Leakproof, Soft, Portable. A Compact and portable design for convenient mobile pumping! Includes: Y-shape tubing, 2x membrane caps, 2x membranes, 2x valve bases, 4x valves (includes 2 spares), 2x 8 oz / 240 ml cups, 4 x silicone breast shields, 2x tubing adapter A, 2x tubing adapter B. Full Silicone Breast Shields - Provides improved comfort and fit compared to traditional plastic breast shields. Spill Guard Finger Grips - Easy to hold your cups of liquid gold and prevent spillage. *Breast pump not included