Ugg Treadlite sneaker, black, size 10.5 or 11? 11” from toe to heel

Ugg Treadlite sneaker. Black with off white sole , in all honesty , not sure if this is authentic UGG- just want buyer to know, have been told both yes and no See Labelling 11” across 10.5 or 11 in sizing, sorry not sure Very comfortable Reduced price - good bang for your buck!!