Onza is a Swiss brand producing tyres mainly for commuters, BMX and mountain bikes, plus a few road options including this Preda folding clincher. It's a lightweight tyre with impressive performance and good puncture protection, making it ideal for summer training, sportives and entry-level racing.
The Preda also comes in a wire-beaded version, but we're testing a pair of the Kevlar-beaded folding ones here. They went onto a pair of Mavic Open Pros easily, but without being sloppy, and sat nicely on the rim when inflated.
The Kenda Kontender is a road bike tyre that's ideal for winter training rides or indeed as a good reliable commuting tyre. It's not the lightest or sprightliest tyre in the world, but it is sturdy and puncture resistant - which is just what you need at this time of year when the roads are covered in slime and debris.