Green fashion must beget green, because brands are continuing to jump on the sustainability train.

Their latest focus? Sneakers. One of the hardest clothing items to make sustainable — because they’re usually made of materials like leather, synthetic leather and rubber, which leave a big carbon footprint — brands are tapping innovative materials to create stylish new options for sneakerheads everywhere.

Yesterday a favorite go-to brand for basics, Everlane, launched a full collection of such kicks called Tread that includes seven different monochromatic “dad sneaker” styles for both men and women ($98).

Apparently, the label’s fans have been asking when it would sell a sneaker for years. After the success of last year’s ReNew fleece sweatshirt — made of 35 plastic bottles — Everlane wanted to find an environmentally friendly alternative to traditional sneakers. They’re made from the “world’s cleanest tannery,” the sole is 94.2 percent free of virgin plastic and the laces and linings are made of recycled plastic bottles.

It’s not just Everlane. Sperry recently debuted sneakers, Sperry BIONIC, as part of its ongoing “Look Good, Do Good” program. Inspired by boat sails, the options ($70 to $100) are spun from plastic recovered from marine and coastal environments. They come in a variety of classic styles for men, women and kids. Plus, they’re earth-friendly right down to the 100-percent-recycled shoe boxes they come in.

Adidas doesn’t want to be left out. In fact, it just created a downright impressive zero-waste sneaker dubbed the Futurecraft.Loop. It’s a performance running shoe that — when its wearer is ready to recycle it — can be ground, melted and turned into another shoe. Adidas partnered with singer and actress Willow Smith on the sneaker, which won’t be available to everyday buyers until 2021. In the meantime, Adidas gave 200 sneakers to “leading creators” to try out and return.

Here’s to a future full of style and sustainability!