I bought the Henley shirt after enjoying the style for years and years of wearing wool, including merino, for cycling. I did not know that spandex was a part of the cloth and what a pleasant surprise I had putting the shirt on for the first time! The comfort of merino was there, but the firmness and flexibility afforded through the spandex qualities were a delight. I am truly pleased with the Woolx shirt and look forward to only a long durable and comfortable wear from it, but from further purchases from forward-thinking Woolx! Thanks Woolx!