The pattern is for slippers knitted in garter stitch. Each slipper is constructed of one large square and four small squares.
The sizes are from Child XS (UK shoe size 5-6, foot length 4-5 1/2 inches, 10-14 centimetres) and Adult XL (UK shoe size 10-12, foot length 11 1/2 to 12 1/2 inches, 29-31.75 centimetres).
Slippers can also be knitted in Aran or chunky yarn.
Book gives tips on adding materials to the soles of the slippers to make them less slippery.
Slippers can be made of oddments of yarn of a similar composition.