Need back protector for Riding jacket

Hi All,

I own RE streetwind eco 2 riding jacket. Got it from the sale. Now i am thinking of upgrading it . There is pocket at back for fitting Royal Enfield Ergo Pro-Tech CE Level 2 back protector. Is there a way I can get it. Or.. Will any other CE 2 level certified back armour fits...?

Or.. should I drop this idea.. and get a better riding jacket?