Size: the iPad Sleeve will be 7.5x10 inches (19 x 25 cm) and fits all iPads.
For materials you can use:
No 2 yarn (Sport, Baby). Catania yarn from Schachenmayr SMC. (raspberry and aqua blue);
3.25 mm hook (US = D-3, UK = 10);
1.7 cm Button;
Tapestry needle.