I just picked up my Yamaha MT-03 a few days ago and already miss my top case from my old scooter. What size do you guys recommend to store a helmet and jacket? On my scooter I've this small 28ltr case and it just fit my helmet and gloves. Could always store my jacket etc under the seat. I've already order a Givi Monolock rack which probably will take a month or so to get here. Which size of case should be suitable for a helmet and jacket? I see that Givi offers everything from 27 to 37ltr. Althing above I believe would look to large on the bike.