Polyester is made from oil-based chemical derivatives. The CO2 emissions of this material are significant and resources are used up in the production process. It is important to provide a solution to the environmental concerns of sports users through innovation in industrial processes, recycling and the circular economy. That's why we have chosen to make this product out of recycled polyester made from plastic bottles.

Based on your feedback, our kids' products are sized too small from years That's why, from 2020, Kalenji kids' athletics shorts will be sized according to height and age to help you in your choice. They will fit kids measuring between 113 cm ( 5-6 years) and 172 cm (14-15 years). We hope this will better meet your needs!

The environmental impact of the product is calculated across its entire life cycle using a range of indicators. An overall ABCDE score is calculated to help you more readily identify products with the best environmental performance by comparing the same type of product (T-shirts, trousers, backpacks etc.). Decathlon is committed to visually displaying environmental information. For more information: http://sustainability.decathlon.com/