The Sync Activewear: The Challenge and Success of Les Lunes' Sync Activewear

It is a paradox of our time: when we want to do something good for our body and exercise, we almost always wrap it in synthetic plastic clothing. Meanwhile, our desire for more naturalness in other areas of life has long been taken for granted. How refreshing would it be if sportswear made from pure natural fibers were not only possible but became the standard? Because true innovation means consistently pursuing the path to greater sustainability – right into our training routine. Textiles that feel soft and at the same time offer the functionality we need. The future of active movement can also be natural – and we want to demand it.

In the rapidly evolving world of activewear, innovation is the key to standing out. For Les Lunes, the launch of the Sync Activewear line was not just another product launch but a bold step towards responsible functional clothing. However, the path to developing the Sync collection was anything but ordinary.

Breaking new ground with seamless bamboo-based technology

The biggest challenge for Les Lunes was clear from the start: it was their first attempt to develop activewear using seamless technology and bamboo yarn. Unlike conventional yarns like nylon or polyester, bamboo yarn presents a number of challenges. Its fibers are incredibly soft and environmentally friendly but do not have the natural elasticity of synthetic materials. Because of this property, it was especially difficult to balance two critical elements in activewear – stretchability and compression strength.

Complicating matters was the fact that the chosen supplier had little experience in producing seamless bamboo clothing. Seamless bamboo-based garments are rare in the industry, which meant that both Les Lunes and the manufacturer were largely entering unknown territory. Developing the ideal prototype required a lot of time and patience. Unlike conventional cutting and sewing methods, seamless production creates each garment as a single piece. This makes each prototype iteration both time-consuming and technically complex.

The technical challenge: achieving the perfect Sync style

The core of the challenge was developing the right “Sync” style. Activewear requires garments that not only stretch but also return to their original shape. Synthetic fibers like nylon or polyester are naturally suited for this – they stretch under tension and snap back seamlessly. Multiple rounds of revisions and prototype creation were necessary. Each version of the leggings, bras, and shorts had to be tested for fit, stretchability, and recovery. The goal was ambitious but clear: to achieve ideal stretch and recovery in a bamboo-dominant yarn without compromising durability or comfort. This process was methodical and rigorous and pushed the boundaries of what seamless bamboo-based activewear can achieve.

The final product: a testament to perseverance

The final composition of the Sync line speaks to this journey of innovation – 75% viscose (bamboo), 18% nylon, and 7% elastane. This unique blend not only provides the necessary stretch and recovery but also the softness and sustainability bamboo is known for. The seamless line includes the flagship Sync Leggings, the Sync Bra, and the Sync Shorts, each representing a milestone in eco-conscious activewear.

Following the success of the Sync collection, Les Lunes introduced the Form line, which benefited from the insights gained during the development of the Sync collection and enabled a smoother production process.

A new era of responsible activewear

Les Lunes has proven that innovation and responsibility can coexist at a high level in the fashion industry. Through perseverance and commitment to quality, the Sync Activewear line sets a new standard for more environmentally friendly sportswear and paves the way for future advances in responsible fabric technology.