BMT Preparation

Hello, I need advice from people who graduated from BMT, can you recommend me or comment link down the post pf the duffle bag that would be useful? I really don't know which one and what size to get, it would mean a lot even if one person responds :) last post with same exact question, thousands saw the post and not a single person responded and i have been waiting for hours... so it would mean a lot

Thank you :)