Experienced: unusual construction

MATERIAL:
Gedifra Cuor di Merino 120 Degradé (97% pure wool, 3% polyamide; 120 m/50 g): 450/500/550 g in Light Grey Degradé color 01007.
One pair size 7mm (UK 2/US 10.5) needles.

Cardigan is worked in one piece, beg at left front edge and end at right front edge. Sleeves are worked separately and side to side and sewn on during finishing process.