Make parenting a little bit easier with this Medela hands-free breast pump collection cups. Click on the BABY PRODUCTS & CLOTHES GUIDE to find everything you need to keep your baby healthy and happy! - https://www.kohls.com/feature/baby-products-guide.jsp. FEATURES: WORKS WITH YOUR EXISTING PUMP: Compatible with Medela Freestyle Flex, Pump in Style with MaxFlow, and Swing Maxi double electric breast pumps. NOT designed for use with Symphony or Sonata., LIGHTWEIGHT DESIGN: Each cup weighs just 2.7 oz., making it one of the lightest hands-free pumping cups available, EASY TO ASSEMBLE AND CLEAN: With only 3 parts, the hands-free collection cups are ideal for busy moms on the go; they assemble and disassemble quickly, CONVENIENCE WITHOUT COMPROMISING: Enjoy the benefit of anatomically designed breast shields to pump more milk in less time*. Each cup holds up to 5 oz. WHAT'S INCLUDED: (2) Collection cups; (2) 24 mm breast shields with o-rings already applied on the shield; (2) 21 mm breast shields without o-rings applied; (2) membranes; (2) extension tubing; (1) instructions for use. DETAILS: 6.5" x 6.9" x 4.3", Ages birth & up, Latex, BPA, and phthalate free, Polypropylene, silicone, polycarbonate, Hand wash, Imported, 90-day warranty. For warranty information please click here - https://cs.kohls.com/app/answers/detail/a_id/140, Model no. 101045671. Size: One Size. Color: None. Gender: unisex. Age Group: kids.