Spacey Stacey has lots of jelly to deliver but not enough time in the day. Her friend Timble builds Stacey a speedy jetpack to help get the job done... but what will happen when Stacey presses the big button? Written by Alice Hemming, this educational Early Reader book is book band White (aimed at 6-7 years, Year 2-3).The colour grading system is recognised by the Institute of Education which reflects the reading difficulty. The book content, language style, phonics and layout are taken into account to determine this.