The wife and I were riding 26" up rite style bicycles (not an ebike) and at age 74 and 71 I personally felt uncomfortable on riding my bike, she was just so so. When we decided to go to and ebike we had no problem on deciding which model we wanted, she test rode a 20" model and said that was what she wanted and me coming for the dirt bike world I personally felt that size would work well for me to. We purchased two Rad Mini Step Thur's and have never been happier with our purchase. The 20" fat tire folding ebike works well for us, both paved and hard packed dirt trails no problem with stability and handling of the ebike. We don't think these ebikes are heavy at 68 lbs., I guess for some who push their bikes to the limit I could see where they might not work for them.