Levi’s has revamped its Wellthread collection by adding new sustainability features to it.

As per Sourcing Journal, the collection, which debuted in 2019 with denim featuring 30 percent hemp has increased its hemp count and added natural dyes and a new men’s fittings range.

The new collection offers garments including men’s and women’s Trucker Jackets, and men’s 502 Taper jeans, made with 55 percent hemp blends. Though too-high cottonized hemp formulations have traditionally sacrificed comfort and hand feel, Levi’s Wellthread team was able to achieve an end product that is both soft and lightweight. By increasing the hemp percentage to anything above 50 percent,

The collection also uses environmentally friendlier dyes. Though chemicals are often used to allow the dye to penetrate yarn, select garments in the Wellthread line are made with a process that uses ultrasonic waves to apply plant-based dye. Select denim pieces and all T-shirts in the collection are made using the new process, with vibrantly colored tees displaying a range of plant-based themes and images.

Also using a more natural dyeing technique is the 551 Z for men, a new authentic straight leg with a zip fly. The Botanic Blue wash is achieved through indigo grown in the U.S. as a replacement crop for tobacco farmers. The denim is made from 100 percent organic cotton from India.

Wellthread also features its “most sustainable jean ever” in the new collection. Launched in July 2020, the 502 men’s jean is made with organic cotton and Circulose, Re:newcell’s material that includes 20 percent recycled denim and 20 percent sustainably sourced viscose. The collection features additional circular design elements, including back patches, Red Tabs, thread and pocketing made with all-natural fibers that ensure easier recycling at end-of-life.