You guys have been great with ski trip advice in the past, hoping I can get some downhill mtb advice as well.

Looking to buy protective gear for 16 yo son who is now into downhill mountain biking at Mt Snow. He's looking for chest & back protection that comes with side protection as well. Mount Snow Sports had a setup that did back and chest, but no protection on the side. One we did find online came in youth sizes only (He's 16, 5'7" or so, 160# and still growing)

Can someone point me in the direction of affordable, but good, gear? And advice on what else to outfit him with? Looking for safety (with rolling him up in bubble wrap )