Baselayers Merino T-Shirt 155 Our Merino T-Shirt first layer (1st layer of clothing) is made from ultrafine, non-irritant, silky soft 155g/qm²-merino wool of certified origin – after trying it on once, you will not want to take it off again. Explore Merino Longjohn Our merino Longjohn 37.5™ (long underpants) is made from the same robust and yet ultra-soft merino wool as the Longsleeve 37.5™. Explore Merino WNTR Socks Explore MERINO Socks SHORT Explore MERINO Socks LONG Explore