You will need circular needles size US 5 (3.75 mm) in at least 32” (80 cm long, and no longer than 16” (40 cm) long.

Finished measurements:
Hem circumference: 57.25(63.75, 68.75”) 145.5(162, 174.5) cm
Finished length: 23.5(24.25, 25)“ 60(61.5, 63.5) cm

Yarn used:
Rowan Denim Revive
Shade 216 Silt - 10(11, 12) balls