Clek showed their new Merino wool collection last year at ABC and now the dark gray (called Mammoth) is available. The Mammoth fabric option is made from ethically sourced, 100% Australian Merino wool, with no-added flame retardant.

Besides being naturally flame-retardant, wool provides the following additional benefits: 

Body-temperature regulating

Naturally hypoallergenic

Breathable

Odour resistant

Luxuriously soft

No word yet on when the light gray color will be available or if they are even still making it.