The bloomers are knitted back and forth on double pointed needles or a circular needle. The elastic structure of the bloomer makes it will fit well and for a long time, on your baby.
Sizes: 0 mos (3 mos) 6-9 mos (12-18 mos) 2-3 yrs
Width: 37 (41) 45 (48) 50 cm
Length: 16 (18) 19 (20) 21 cm
Needle size: For the two smallest sizes you will need double pointed needles 3 mm and 3,5 mm (U.S. size 3 and 4). For the three biggest sizes you will need double pointed needles 3 mm and circular needles 3 and 3,5 mm (40 or 60 cm).
Gauge: Structural knit: 22 sts per 10 cm
Yarn quantity: 50 (50) 50-100 (100) 100 g. You may knit in a main color A, and the waist and i-cord in a contrast color B, about 10-20 g.
Recommended yarn: Sandnes Garn Duo or other light yarn with the same gauge.
Photos: @elisevoie @havrebarna @knitbyjacobsen