The pattern for this style of iPad case is as follows.4mm crochet hook. (I wrote down a 5mm hook when I started, but I was using a 4mm hook throughout, so I'm fairly certain that I started with a 4mm hook too.)
Row 1: Ch 40. HDC in 2nd ch from hook. HDC in each ch to second last ch. 3 HDC in last ch.
Working on opposite side of ch, HDC to second last ch, 2 HDC in last ch and join with sl st.
Row 2: Working in back loops only, ch 1, HDC in each st around. Join with sl st.
Row 3: Ch 1, HDC in each st around. Join with sl st.
Continue row 3 another 28 times for a total of 31 rows.
Changing colours wherever you want for stripes, or whichever pattern you like. This is incredibly simple to make, and fast!
To make the latch, I counted 15 stitches from the side, joined wool and did 10 HDC.* Ch 1 and turn, HDC in each st across.* Repeated * to * for 10 more rows (total 11 rows) Ch 1, turn and single crochet in next 5 st, ch 15, sc into next st, sc to end of row. Attach button for the loop.
Hope you enjoy.