This dress is from Club Monaco Collection, which was a higher-end version of their main collection. 

This dress is made from a blend of merino wool, camel hair, alpaca, and elastane. It is beautifully soft and thick but very lightweight.

It is in a slightly varied deep grey, has ribbing detail on the top half (body, sleeves and neck), then plain knit on the bottom. It has a mock neck, cut outs at the top of each shoulder, long sleeves and an above knee length skirt.