peter wrote:A picture, be prepared if want to click the link.
That is rather comprehensive.
As my kids and I are allergic to elastoplast/bandaid adhesive, we use these sort of products:
Although for something that long, you'll obviously need something bigger than the 10x10cm dressing! I imagine you can buy rolls of just the dressing pads, then use the Hypafix/Fixomul over the top.
They're excellent for active kids always in need of repairs. Cut it to size and the glue sticks so well it makes them cry when they take it off Unlike bandaids that fall off as soon as you sweat.
We get them from a medical supplies store called Actimed but I'm sure there are lots out there that sell to the public.