Knitting starts from the back neck, worked seamlessly from the top-down.

20210514 Japanese version added:
K2tog Yarnさんの協力で日本語版をご用意しました。ご興味ある方は https://k2togyarn.shop/ にてキットでお求めいただけます。日本語版は日本の毛糸でご案内しております。

A video for the Roving Kimono on Youtube: https://www.youtube.com/watch?v=fEYFEFoHxnQ
Size: XS ( S, M , L ) Sample photo shown in size M.

Measurements:
Gauge: 23 sts and 29 rows = 10 x 10 cm ( 4 x 4 in ) in stockinette after blocking.

Length: 82 ( 88, 94, 100 ) cm / 32.25( 34.7, 37, 39.4 ) in
Armhole circumference: 45 ( 48, 48, 51 ) cm / 17.75 ( 18.8, 18.8, 20.1 )
Length from underarm: 45 ( 45, 48, 51 ) cm / 17.75 ( 17.75, 18.8, 20.1 ) in
Body circumference: 122( 136 ,150, 164 ) cm / 48 ( 53.5, 59, 64.5 ) in

Materials:
Yarns : Cloudborn Pima Cotton DK / Jungle Green
231 yds / 212 m per 100g , approx. 7 ( 7, 8, 9 ) skeins
Needles: 4mm / 6 US for the garment
6mm / 10 US for the waist strap

Other Materials:
Stitch markers, Waste yarn

The waist strap completing the look, place it through both armholes then tie to the front or back.
How to knit I-cord, and attach with tassel: See this tutorial here: https://www.youtube.com/watch?v=rp7Ew8N4svg

Find yarns here.