I am so pleased to share these pump machine adapted backpacks online
 
These are large bags with plenty of room for equipment and accessories, dimensions are at the bottom of the page. For me these bags fit plenty from the feeding pump in the stand, extra milk, charger and even fit the Micky button box with our infinity pump stand at the same time. They have an additional clip in the centre top to hang a milk bag or bottle from if required, I use mine to store the tubing (giving set) rolled up between feeds. They also metal opening on the side for the feeding line to feed through. They have also been adapted to have a metal opening connecting the front pocket to the main compartment. The inside has also been adapted with a strap and velcro to wrap around the flocare feed stand to keep the pump machine stand secure from slipping about, and can also be used on some bottle types to hold in place.
 
These backpacks are designed to be worn or hung when in use to reduce any occ in/out errors and kinks in wires. We all know how temperamental the machines can be.
 
 
Each backpack measures 38 x 28 x 18 cm (15 litres) with a large front accessory pocket
 
Please note they don't include the personalised case in the photos.
 
I would personally advise to hang these bags using both straps if carrying a lot of weight rather than just through to the top handle. These are adapted backpacks