High levels of natural insulation even when wet great breathability make the baabaa merino long sleeve base layer incredible value for moneymerino wool is an ace material to use for cycle clothing but do not get merino confused with those itchy wool jumpers that your nan used to knit merino wool is soft and silky to wear merino sheep can be found in the southern alps of new zealand where the weather can be extreme and varied in conditions where regular sheep just wouldnt survive merino wool