This is my interpretation and description of the granny slipper, warm and a little fuzzy, fast and easy to make.

Size: women’s / men’s
Yarn: Wool yarn (3 strands)
15g of color A (dark grey)
25g of color B (rust)
50g / 90g of color C (natural)
Hook: H (5mm)

Gauge: 1 granny square before felting:
4x4” (10x10cm) / 4¾ x 4¾” (12x12cm)