SHIRES Hi-Lite Bambino Childrens First Saddle anyone ever tried

[mytrotters]

Hi All hoping in buying temp until my daughter can get her seat correctly, only problem is whist looking to order the SHIRES Hi-Lite Bambino Childrens First Saddle* it dont come up with sizing like wide extra wide etc anyone know if they are sort of like cubs as i think cubs just normally fit straight off???

Thank you

 

[mytrotters]

also looking at another would a 13" seat be too small for a 6 yr old?