One of the tubes I've used is Protex because they were the least expensive when on sale from forestry supply. The come in flat sheet. They have tabs/slots that you are supposed to connect to make the tube. They are not vented. Rather than use the tabs/slots provided, I used a drill press on the flat sheets to drill holes on opposing sides that I use cable ties to close. This makes the tubes a bit larger diameter. I used the same drill press with a larger diameter bit to vent the tubes where I wanted. Because these are wrap around style instead of slide over, they can be removed without cutting them by clipping and replacing the cable ties.
I've also used Plantra tubes. These are slide over type tubes and are not made for easy removal, especially if the tree is branching above the tube. They are more expensive and vented. I remove mine by simply slitting them vertically down the middle of the venting. I then unwrap them, clean out the tree and wrap them back around. I then use cable ties through the venting holes to reapply them.
Thanks,
Jack.