This case is very warm! Yours glasses won’t freeze in the very cold winter days.
The yarn should downy but not smooth. This will make pattern especially cosily.
The case is worked in one piece, bottom up and seamless.

Yarn:
100% acrylic;
3 ½ oz. (100 g);
547 yds. (500 m).

MC - 20 g;
CC - 5 g.

Hook:
US D (3,0-3,25 mm) crochet hook OR SIZE NEEDED TO OBTAIN GAUGE

Additionally:
1 button

Gauge:
12 st = 4” (10 cm);
9 rnd = 4” (10 cm).