NO RETURNS ACCEPTED ON THIS ITEM. ALL SALES ARE FINAL. ONCE ITEM IS OPEN CAN'T BE SOLD. PLEASE MAKESURE YOU BUYING RIGHT ITEM. Medela PersonalFit Flex Connectors Shield for Freestyle Flex, Pump In Style, Breast Shield Size 24mm and 21mm Breast Shield Size 24mm and 21mm Before Purchase: Please ask any/all questions related to this item to make sure you're purchasing the correct item and verify it's compatibility to avoid any frustration. After Purchase: If you're not satisfied with your purchase or have any questions/concerns, please contact us via Messaging and give us an opportunity to resolve any issues. Note: We respond to messages in the order they're received, please allow some time for us to get back to you, sending multiple messages will only cause delays in getting back to you. Once again, please give us an opportunity to resolve any issues/concerns with your purchase before Opening a Return or Opening a Case . We want to make sure you're happy satisfied with your purchase. Your feedback is extremely important to us! If you are satisfied with our service please take the time to give us positive feedback. We tremendously appreciate it! We strive for your complete satisfaction. Likewise, if you have any issues, please contact us first, and we promise we will do our best to satisfy your needs and solve the problem. If we resolve your problem, we kindly ask you to still leave us positive feedback. Your kindness will be extremely appreciated!