Keelan Giles, Rhun Williams, Leon Brown and Harrison Keddie to train with Wales
Ospreys wing Keelan Giles, Cardiff Blues full-back Rhun Williams and Dragons pair Leon Brown and Harrison Keddie will train with the Wales squad.
The group have not been called up but will train with the 36-man squad before Wales' autumn international series.
All four were part of the Wales Under-20s squad that won the Under-20s Six Nations Grand Slam last season.
Giles, 19, scored a hat-trick of tries in Ospreys' 31-13 European Challenge Cup win against Lyon on Saturday.
Twenty-year-old Keddie received his first Dragons start in their loss to Russian side Enisei-STM.