8 footwear brands that make sustainable sneakers from recycled and renewable materials

While recycled knits account for a big part of the sustainable sneakers market, Tread by Everlane is for those who still appreciate quality leather. With 94.2% non-virgin plastic soles, leather sourced from the world's cleanest tannery, and laces and linings made from recycled plastic bottles, The Trainer is touted (by its maker, mind you) as the world's lowest-impact sneakers.

Even if you aren't a particularly conscious consumer (although you should be), Tread by Everlane has great appeal. Its style lends itself well to minimalists and lovers of that cut-and-sewn look found on retro running sneakers.

Read more: We tried Everlane's low-impact unisex sneakers — here are our thoughts

When Reebok first launched the Cotton + Corn NPC UK sneaker, it featured leather accents on the heel tab, but after receiving kickback from Peta, the brand took the initiative to make the shoe vegan. The updated sneaker features a 100% cotton upper, a sole derived from corn, and insoles made from castor bean oil. Even the packaging is 100% recycled.

Founded in 2019, Nothing New is a sneaker startup that aims to positively impact the planet and educate the people that live on it. Unlike most brands on this list that are simply making strides to improve their eco-friendliness, sustainability is at the very core of the brand.

As the name suggests, Nothing New sneakers are made with only recycled materials. The upper is 100% post-consumer recycled plastic, while its other components are made from recycled cotton, fishing nets, rubber, and cork.

Beyond the production process, Nothing New offers $20 discounts on new pairs to those who send back their used sneakers. Depending on the condition of the sneakers, Nothing New will clean and donate them or break them down and put the materials back into its recycled supply chain.

Read more: This sneaker startup is helping to change industry sustainability standards by using 100% recycled materials

The Chuck Taylor All-Star is cemented in footwear as one of, if not the most timeless sneaker on the planet, but Converse has proven that it's able to stay in touch with modern demands. Using 100% recycled plastic bottles to make up its canvas upper, the Renew Collection is the latest example of its commitment to produce more carefully.

The process starts with plastic bottles sourced by UK-based recycling company First Mile. The plastic is then ground up into flakes, melted, rolled into bales, spun into yarn, and weaved into canvas.

The best part about the Converse Renew collection is that shoes are fully customizable and are available in sizes from toddlers to adults.

Over the last five decades, Nike has continually pushed boundaries in sportswear innovation. While performance has been at the forefront of its designs, sustainability has also been a major factor in recent years. Even though sustainability isn't heavily incorporated into the brand's marketing (compared to Adidas Parley or Allbirds), the brand's work has not gone unnoticed.

In 2018, Nike was recognized by Textile Exchange as using the most recycled polyester in the industry for the sixth year in a row, and from 2010-2018, the brand transformed 6.4 billion plastic water bottles into recycled footwear or apparel.

Nike's signature Flyknit material, which can be found on footwear throughout the brand's catalog, is made in-part with recycled plastic, but the Swoosh is doing more than sustainable kits. This past Earth Day, Nike also launched sneakers made from Flyleather, a new material made from at least 50% recycled leather fiber. Although there haven't been many other sneakers to release with Flyleather yet, you can expect the material to be included in more future designs.

As the brainchild of New Zealand native Tim Brown and San Francisco-based renewables expert Joey Zwillinger, Allbirds is the wildly popular sneaker startup you've seen all throughout Silicon Valley and New York City. In just four years, the brand reached a $77.5 million valuation — all thanks to its sustainable footwear.

Love them or hate them, all of Allbirds' designs are undeniably unique and unmatched in comfort. The brand's shoes are made with merino wool or eucalyptus trees for the uppers and sugar cane for the SweetFoam soles. They even made the patent on their SweetFoam material public so that other brands could utilize it as a sustainable alternative. Recycled plastic and castor bean oil also make their way into the inner-workings of the shoes. Allbirds even uses 90% post-consumer recycled cardboard for packaging that serves as a shoe box, shopping bag, and mailer all in one.

We've reviewed everything from the signature Wool Runners to the newer Tree Toppers, and found them to be incredibly comfortable.

Read more: Allbirds, the company behind 'the world's most comfortable shoes' also makes a kids' version

As a brand built for the outdoors, Timberland has been working on sustainable footwear well before it became popular to do so.

In 2007, the brand launched its Earthkeepers collection, which featured boots with Green Rubber soles made from recycled tires, and lining and laces made from recycled plastic bottles.

To date, Timberland has used the equivalent of more than 345 million plastic bottles in its products — and the brand is increasing its efforts with the new Brooklyn EK+ sneakers. Coming in lace-up and slip-on models, the shoes are made from 100% recycled plastic "ReBotl" uppers and outsoles made of 34% recycled rubber.