I believe this is produced exclusively for Siebenblau. More info here.
From Siebenblau:
super soft organic wool fleece in nightblue
The wool is from certified organic husbandry in South America.
Perfect for warm outerwear, but for cuddly warm blankets as wellAdditional product information
Material (ecology): 100% organic wool
Type of fabric: Fleece
Dyeing / Dyes: Global Organic Textile Standard (GOTS) certified colours
Certification of fabric: Global Organic Textile Standard (GOTS) certified fabric
Certification number: CU 822045
Width: approx. 160 cm
Weight (sqm): approx. 310 g/sqm
Washing temperature: 30°C
Laundry detergent (recommendation): organic detergent for wool
Drying: dry lying (no dryer)
Origin of the fiber (country): South Amerika
Production (country): Germany
Dyeing / Finishing (country): Germany
Choice: Meter