Yes you can. We have many Bobbin riders using child seats. You can either fit a rear carrier-mounting seat or a frame-mounting seat. Carrier-mounting seats are generally easier to fit; please be aware you will need a rear carrier with a weight limit of 25kg for this (the Bobbin alloy rear carrier , for example).
**Frame-mounting seats are not recommended for the S/M frame sizes**
Contact us if you need more advice on this.