Now capped 20 times by Wales, Ben also faced the media with team-mates Hal Robson-Kanu and Andy King.
Wales open procedings in Group B against Slovakia in Bordeaux on Saturday (5pm UK), followed by England against Russia in Marseille (8pm).
, Mousa Dembele and Toby Alderweireld have had two sessions with Belgium today, the first a closed session, the second an open session at Stade Chaban-Delmas, former home of Bordeaux. Belgium face Italy in a huge Group E opener in Lyon on Monday (8pm UK).
Meanwhile, Kevin Wimmer travelled to France with the Austria squad today. They kick-off in Group F against Hungary also in Bordeaux on Tuesday (5pm UK).
Below: Ben in training action with Wales on Wednesday