Does old epi-pen jr fit in new e-belt?


Hi Everyone, I am new here. My son (6) is allergic to cashews and brazil nuts and we need to get him a belt to carry his epi-pen. I was doing some research and the e-belt seems to be popular. His current epi-pen is the old version and is expiring in january. Does anyone know if the new e-belt will fit the old epi-pen? Or I can just get a new style epi-pen (our coverage would allow that *i think*) There is another one that I was looking at: Do you think this could work for my little guy? He has never worn an epi-pen before and I dont want it to be cumbersome for him when he runs around in the playground. Thanks much, Fatima