Be Fun Comfort Mixte. The Smoby Be Fun Comfort Mixed Trike is a wonderfully versatile first tricycle. Kids will love its bright colours and its sturdy metal frame with non slip pedals. From 10 to 20 months, children can be secured with the safety ring and belt, but these can be removed as they get more confident. Not only is this trike great fun, it's practical too, featuring a storage bin at the back, a nursery bag for carrying essentials and a removable parental control handle.