Merino
Merino is a breed of sheep that produces exceptionally fine, soft wool. The fiber diameter is typically 15–24 microns — fine enough to wear directly against the skin without itching. It is the standard material for performance base layers and travel clothing.
Where it comes from
Merino sheep originated in Spain and are now raised primarily in New Zealand and Australia. New Zealand's ZQ Merino certification is widely regarded as the leading standard for responsible merino production.
Properties
Microplastics
Merino is a natural wool fiber. It does not shed synthetic microplastic particles. This is significant for activewear: synthetic performance fabrics shed microplastics with every wash, while merino performs without them.
Certifications to look for
Merino brands in the directory
Fibers and certifications as published by each brand.
Canadian women's natural fiber clothing in linen, merino, silk, and organic cotton.
Travel-focused casual clothing made from linen, organic cotton, merino, and alpaca.
Merino wool base layers and cotton outdoor clothing built for hiking, climbing, and running.
Outdoor basics and activewear in merino wool and organic cotton for men and women.
American-made men's wardrobe staples in Supima cotton, linen, hemp, and merino.
Sydney-made custom-fit organic cotton, hemp, and merino clothing for men and women.
Danish organic cotton basics in a wide range of bold colors for men and women.
Vermont-made merino wool socks for men, women, and kids with a lifetime guarantee.
Luxury linen and cashmere fabrics, throws, cushions, and upholstery textiles for high-end residential and commercial interiors.
Women's premium apparel in organic linen, Pima cotton, and merino with a take-back program.
UK surf and outdoor brand making apparel in organic cotton, hemp, and merino.