'Double Zip' adds a new dimension to pumping! The double zipper allows you to decide which side tubing will extend from. Pretty pump cases for everyone. Search our large selection for the perfect pump case for you. This sparkle green insulin pump cases is great because you can wipe it clean Standard size Pump cases measure approx. 3 Â½ inches wide by 2 1/2 inches high. They hold all pumps except for the distronic d-tron pump which is larger than standard size pumps. D-Tron Size is not available in this style.