We define criteria for material selection and product development, and we promote initiatives focused on the circular economy.

OTB’s brands are gradually adopting the criteria established at the Group level for material selection and product development. Listed below are some of the key initiatives and results achieved by the brands in 2025.
Among the various initiatives, Diesel achieved a significant milestone with its SS26 collection with more than 70% of the brand’s new Ready-To-Wear and Denim collections in line with the OTB Responsible Product Guidelines. For the same season, in the Denim category alone, 85% of the quantities produced for the new collection complied with those guidelines. The brand also increased its use of lower-impact cotton, which accounted for about 42% of its total cotton purchases, compared to 31.4% in 2024.

OTB Group production hub Staff International worked with the Marni, Maison Margiela and Jil Sander brands to help them improve their sustainability performance of their respective collections.

Within this context, Marni increased its use of certified low-impact fibres and innovative solutions. In the Pre SS26 collection, products compliant with the OTB Responsible Product Guidelines accounted for over 55% of total sales for the collection. In 2025, the brand further increased its use of lower-impact cotton, which accounted for around 35% of the brand’s total cotton purchases. Also, the proportion of leather purchased from LWG certified tanneries reached 66% of the brand’s total leather purchases.

Jil Sander has continued to gradually expand the use of alternative fibres and lower-impact materials in all its collections. In the SS26 Show collection, the total range of products compliant with the OTB Responsible Product Guidelines generated approximately 30% of sales, while products in the Bags and Small Leather Goods category accounted for 90%. In 2025, the brand continued to purchase alternative cellulose fibres from responsibly managed forests, reaching a share of approximately 27% in its Ready-To-Wear collections.

For Maison Margiela the main focus was leather. In fact, in 2025, leather purchased from LWG certified tanneries reached 55% of Maison Margiela’s total leather purchases. The Maison also focuses on research into innovative materials and processes with a low environmental impact. In the SS26 Show collection, products compliant with the OTB Responsible Product Guidelines generated more than 45% of sales, a figure that rises to over 85% in the Handbags and Small Leather Goods category alone.

In 2025, Brave Kid confirmed its commitment to sourcing materials with a low environmental impact for the collections of the brands it works for, reaching 19% in the SS26 collection, an increase of 7 percentage points compared with the FW25 collection.

Viktor&Rolf promotes the use of lower-impact materials and works with suppliers to identify innovative solutions that are consistent with the brand’s identity. In 2025, it introduced a new product category in the Ready-To-Wear collection featuring polymer-based alternatives to leather, choosing a cactus-based material that replicates the look and texture of leather and skins.