Arsenal F.C.Arsenal FC Boys Jacket Track Top Retro Kids Official Football Gift

would this 10-11 fit a 8 year old

Does this jacket have a silky finish? (Similar to the junior stadium one)

What does lb,xlb,mb mean next to the sizing,please?

Hiya ... Can anyone say if these come up big or not?? Not sure if I get 10-11 or 12-13 for a big 10 yr old!