Nature Underwear,made from the finest, softest, most luxurious merino in the world, Nature Ultralite is unbelievably gentle on your skin. This beautiful range of pure merino underwear features stunning nature-inspired prints.Nature Ultralite is a premium range of luxurious underwear made from the finest, softest merino in the world.Whatever weather conditions the day has in store for you, you'll stay feeling warm, snug and protected from the elements in these silky soft leggings. The fine merino fibre prevents itching or chafing, and you can wear them for days - maybe even weeks - without washing.