Rothy’s, the recycled-plastic footwear brand, gets a deal valuing it at $1 billion.

The Brazilian proprietor of Havaianas, the maker of flip flops, is taking a 49.9 % stake within the shoe model Rothy’s, valuing it at $1 billion within the trade’s newest guess on the promise of sustainable style.

Rothy’s, which launched its sneakers in 2016 and is predicated in San Francisco, is thought for its eco-friendly — and trendy — ballet flats, worn by celebrities reminiscent of Meghan Markle. The model says it makes its sneakers from single-use plastic bottles in a 300,000-square-foot manufacturing facility in Dongguan, China. Lately, the corporate has ventured into luggage, wallets and males’s loafers, additionally constituted of recycled and marine plastic, and has shops in Los Angeles, New York and different cities.

Traders and customers are more and more being attentive to the heritage and social impression of attire and equipment they again or purchase. AllBirds, which additionally makes sneakers from sustainable sources, cashed in on that curiosity this yr in an preliminary public providing that valued it at about $4 billion.

Alpargatas, the footwear firm that owns Havaianas, will initially pay Rothy’s $200 million in money, adopted by a purchase order of about $275 million of shares in Rothy’s. The founders of Rothy’s, Stephen Hawthornthwaite, who’s chief govt, and Roth Martin, the president, will stay vital homeowners and proceed to supervise operations, they mentioned in an interview.

Rothy’s, which introduced in about $140 million in internet income within the yr main as much as November, is “meaningfully worthwhile,” Mr. Hawthornthwaite mentioned. The corporate has taken on $5 million from exterior buyers since its inception, and can put proceeds from the Alpargatas deal into model promotion and use the Havaianas community to broaden its retail presence.

Alpargatas has the choice to purchase as a lot because the entirety of Rothy’s between the primary and fourth anniversaries of the deal, which was struck on Monday. Roberto Funari, the chief govt of Alpargatas, mentioned the deal would permit his firm to broaden its footwear past the enduring flip-flops.