Then that's pulls up the question of where did you get those goggles. Problem is you didn't get them from him before you go into the echo because he puts them back on afterwards... I really think its more a symbolism at this point in time than anything. You didn't magically conjur a pair up and he didn't give you his when you went to the past in the echo also he does have that third eye thing so the memory of "handing" him the goggles as someone else I think pointed out could be you metaphorically offering him a "helping hand" with his memories.