Available in English
Size 5 cotton crochet thread, 2 metres of suitable fabric, 2mm hook, tapestry needle, elastic to fit.
3ch at beginning of each row (turning chain) counts as 1tr (US - 1dc). All other chains worked in pattern count as 1 st. You can use whatever materials you want to adjust the size of the inserts. You may find it easier to use a smaller hook to work the first row into the fabric.
14 sts and 7 rows of tr to 5cm/2inches using given materials.