I like to think of myself as a turtleneck connoisseur, as I'm very fussy with the details. I basically live in them during the colder months and have an extensive collection from various brands and fabrics. So far, I've been deeply impressed with O2. These are super lightweight, breathable and warm (the ultimate trifecta!). They have great temperature control and layer easily. Moreover, they fit beautifully. They hug the skin without being suffocating or itchy, and still allow for comfortable movement. The way the neck sits is both flattering and comfortable. The sleeve length is long enough so that when I move my arms they don't pull up. They also tuck in smoothly into my bottoms. I've had them for a couple of weeks now and I've noticed the bamboo fabric has much better odour control than cotton (I can get 2 wears out of them before throwing it in the wash, and so far they've held up well in the wash). The bamboo feels really soft and smooth on the skin (I personally prefer it over merino, cotton or other natural fibres). Really happy with this high quality product and I can't wait to get them in more colours. :)

Comfort and could be warmer.

Purchased two skivvies for the first time. Great quality and material, comfy and look good.

Great as a first base layer when at the snow, really kept me toasty warm