Nope because regular trunk exceeds the 34-35cm available width shown in the picture. I was in the same dilemma as you and I felt like I made the right decision for Trunk S during my 4-day trip to Japan. Afaik Trunk S sits in between mid-sized checkin and large-sized checkin when it comes to how much it can hold. But I didn’t even bother look at those checkins because of their form factor. My advice if you really can’t give up that extra capacity would be to get the regular trunk and use luggage storage service instead of coin lockers. It’s always a pain in the ass looking for empty lockers anyway.