Natural fiber alternatives to Lululemon
Updated July 19, 2026
Lululemon is primarily made from nylon and polyester — petroleum-derived synthetic fibers. Their fabrics are engineered for stretch and performance, but every wash cycle releases hundreds of thousands of microplastic fibers into wastewater systems. These microplastics pass through water treatment, enter rivers and oceans, and accumulate in fish, drinking water, and the human body.
Natural fiber activewear works differently. Merino wool regulates temperature in both directions, resists odor naturally without synthetic treatments, and biodegrades at end of life. It does not shed microplastics. For yoga, hiking, gym training, and outdoor sports in variable conditions, merino wool often outperforms synthetic alternatives on the metrics that matter most — comfort, odor resistance, and temperature adaptability. The brands below make natural fiber activewear and are listed in The Plain Thread directory.
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.
B Corp women's clothing brand using natural and organic fibers, one of the UK's highest B Corp scorers.
Organic cotton clothing for babies and kids, from newborn basics and sleepers to toddler tops and accessories.
100% organic cotton, spandex-free basics and underwear designed for sensitive skin.
Vermont-made merino wool socks for men, women, and kids with a lifetime guarantee.
Swedish outdoor and rain gear brand, fully PFAS-free, for men, women, and kids.
Organic cotton underwear, basics, and lingerie for men and women, made under fair conditions in Europe.
Fair Trade certified basics in organic Peruvian Pima cotton for men and women.
Organic cotton jeans and trousers for men and women, made under GOTS-certified standards by a German family brand.
UK surf and outdoor brand making apparel in organic cotton, hemp, and merino.
Swedish outdoor and casual brand using organic cotton and wool with no PFAS.
US marketplace for independent boutiques carrying many natural fiber brands.
Organic cotton basics and tees for men and women with a carbon offset commitment.
Swedish outdoor brand offering PFAS-free technical apparel with natural fiber options.
New Zealand merino wool outdoor base layers and apparel for men, women, and kids.
Dutch activewear in hemp, organic cotton, and TENCEL for men and women.
Hemp and organic cotton basics and streetwear made with a focus on regenerative agriculture.
Norwegian women's activewear brand making merino wool base layers and technical clothing for outdoor sports.
Organic cotton clothing for babies, kids, and women, certified to the Global Organic Textile Standard.
Merino wool outdoor apparel for men and women with a Himalayan-inspired aesthetic.
American outdoor and casual brand offering cotton and wool clothing free of PFAS.
Organic Fairtrade cotton clothing for babies and children, from everyday basics to outerwear.
Los Angeles brand making organic cotton and TENCEL basics and activewear for women, men, and kids.
100% New Zealand merino wool base layers and travel clothing for men and women.
New Zealand ZQ merino wool ski and outdoor apparel for men and women.
Mongolian cashmere knitwear brand working directly with herder cooperatives.
Danish organic cotton underwear and basics for men and women.
Traceable alpaca clothing and knitwear sourced directly from Peruvian farming communities.
Outdoor brand making apparel in organic cotton, hemp, and merino wool with strong environmental advocacy.
Outdoor and yoga clothing in organic cotton and hemp for men and women.
Affordable luxury basics in cashmere, organic cotton, silk, alpaca, and linen for men and women.
Full-range organic brand offering clothing and underwear in organic cotton, linen, hemp, and merino.
Outdoor apparel in hemp and organic cotton designed for travel and adventure.
Merino wool socks, base layers, and outdoor apparel for men, women, and kids.
German cotton socks, boxer shorts, and everyday basics for men and women made with cotton blends.
Japanese outdoor brand making merino wool and natural material apparel for men and women.
Australian multi-brand natural fiber marketplace carrying hemp, cotton, and linen clothing.
Organic Egyptian cotton baby and toddler clothing, toys, and accessories made with fair trade practices.
German outdoor and casual brand with GOTS-certified products and a PFAS-free commitment.
Organic cotton yoga leggings, sports bras, and tanks made for women, designed for yoga and active movement.
Women's ZQ merino wool dresses engineered to be worn for 100 days without washing.
Merino wool activewear and base layers for men and women at mid-market prices.
Affordable GOTS and Fair Trade organic cotton basics for men and women.
Alabama-made organic cotton socks in a wide range of styles for men and women.
Montana merino wool brand using fiber from the founders' own family ranch, spun and sewn entirely in the USA. Core base layers, mid-layers, and accessories are 100% merino wool.
Common questions about natural fiber activewear
Is Lululemon made from natural fibers?
No. The vast majority of Lululemon products are made from synthetic fibers — primarily nylon, polyester, and Lycra (spandex). Their proprietary fabric names like Luon, Nulu, and Everlux are blends of these synthetic materials. Lululemon does not have a significant natural fiber line. Some products include a small percentage of natural fiber, but the base construction is always synthetic.
What is Lululemon fabric made of?
Lululemon's most popular fabrics are synthetic blends. Luon is 81% nylon, 19% Lycra. Nulu is primarily nylon. Everlux is polyester. These materials are engineered for stretch, moisture-wicking, and compression — performance properties that synthetic fibers deliver well. The environmental cost is that synthetic fabrics are petroleum-derived, do not biodegrade, and shed microplastic fibers during every wash cycle. Studies estimate that a single wash of a synthetic garment releases hundreds of thousands of microplastic particles into wastewater.
What are the best natural alternatives to Lululemon?
Merino wool is the closest natural fiber in performance terms. It temperature-regulates in both directions (warms when cold, cools when hot), wicks moisture away from skin, resists odor naturally, and is soft enough for direct skin contact. For yoga and low-impact training, merino wool leggings and tops perform comparably to synthetic alternatives. For high-intensity training where stretch and compression are priorities, natural fiber options are more limited but do exist in merino-blend construction. The brands in this directory specialize in natural fiber activewear.
Is merino wool good for working out?
Yes, within the right conditions. Merino wool excels in activities where temperature regulation matters: hiking, yoga, cycling, gym training, and outdoor sports in variable conditions. It wicks sweat and dries reasonably quickly. Its natural odor resistance means you can wear it through a workout and not immediately need to wash it. The limitation is that merino wool has less stretch than nylon-spandex blends, so it is less suited to activities requiring maximum range of motion with compression. Merino-spandex blends address this for those who want natural fiber performance with stretch.
Do natural fiber workout clothes perform as well as synthetics?
In many conditions, yes — and in some they outperform. Merino wool regulates temperature across a wider range than polyester, which means you can wear it in both cold and warm conditions without overheating or being too cold. It manages odor better than any synthetic fiber. For hot, humid conditions like tropical climates or heated yoga studios, linen and lightweight merino both outperform polyester for breathability and moisture management. The areas where synthetics still lead: maximum stretch, compression, and abrasion resistance in high-intensity contact activities.