Size Chest Leash Width Leash Height
Small 13.5" (34cm) 5/8" (1.5 cm) 4ft (120cm)
Medium 15.5" (40cm) 5/8" (1.5 cm) 4ft (120cm)
Large 17.5" (44cm) 5/8" (1.5 cm) 4ft (120cm)
Extra Large 20.5" (52cm) 5/8" (1.5 cm)  4ft (120cm)