Lyocell Activewear: The Complete Guide to TENCEL™ Sportswear

Lyocell — particularly TENCEL™ Lyocell — is the most significant fabric innovation in sustainable activewear. Softer than polyester, more breathable than cotton, naturally odour-resistant, and genuinely biodegradable. Here is everything you need to know.

What Is Lyocell?

Lyocell is a semi-synthetic fibre made from cellulose pulp — typically derived from fast-growing, sustainably managed hardwood species like eucalyptus, beech, and spruce. The raw wood pulp is dissolved in a non-toxic solvent and extruded through fine nozzles to create fibres. TENCEL™ is the most widely recognised lyocell brand, produced by Austrian company Lenzing AG.

What makes TENCEL™ Lyocell environmentally distinctive is its manufacturing process: a closed-loop system in which 99.5% of all solvents are recovered and recycled. Water consumption is dramatically lower than cotton production. The finished fibre is biodegradable in both compost and marine environments. It produces no microplastics when washed.

Why Lyocell Is Better Than Polyester for Activewear

Breathability and Moisture Management

Lyocell is hydrophilic — it absorbs moisture into the fibre and distributes it evenly, enabling faster evaporation. This keeps skin drier during training and creates a cooling effect that polyester cannot match despite its "moisture-wicking" claims. Polyester moves moisture to the outer surface but keeps it sitting there — creating a damp, bacteria-friendly environment.

Natural Odour Resistance

Because lyocell absorbs moisture into the fibre rather than trapping it between fibres, it is significantly less hospitable to the bacteria that cause odour. This is an inherent property of the fibre structure — not a treatment that washes out. Lyocell garments stay fresher between washes than comparable polyester garments under identical training conditions.

Softness and Skin Feel

Lyocell has a naturally smooth fibre surface consistently described as silky. Unlike polyester, which can feel abrasive under sustained friction, lyocell remains comfortable against skin even during extended high-intensity training — particularly important for base layers, training tees, and performance shorts.

Durability

High-quality lyocell handles repeated washing well when treated correctly (30°C, gentle cycle, air dry), maintains its shape, and does not pill as readily as lower-quality synthetic blends. APRÍ's lyocell garments are designed and tested for sustained performance across training and everyday use.

The Environmental Case for Lyocell

Compared to the main alternatives in activewear:

vs. Polyester: Lyocell is biodegradable; polyester is not. Lyocell produces no microplastics; polyester sheds hundreds of thousands of fibres per wash. Polyester is derived from petroleum; lyocell from sustainably grown wood.
vs. Cotton: Conventional cotton production requires approximately 10,000–20,000 litres of water per kilogram. TENCEL™ Lyocell requires a fraction of that, using a closed-loop manufacturing process with 99.5% solvent recovery.
vs. Nylon: Like polyester, nylon is petroleum-derived and produces microplastics. Lyocell has a significantly lower environmental footprint across all major impact categories.

TENCEL™ Lyocell is certified under OEKO-TEX STANDARD 100, confirming the absence of harmful substances in the finished fibre.

Lyocell in APRÍ Activewear

APRÍ uses TENCEL™ Lyocell as the primary fabric in its technical performance range. The lyocell fabric is certified under OEKO-TEX STANDARD 100, GOTS (Global Organic Textile Standard), and Bluesign — three of the most rigorous textile certifications available.

Combined with APRÍ's plant-based anti-odour technology (NordShield in APRÍshield™ garments, HeiQ Mint in APRÍtech™ garments), the result is activewear that addresses the odour problem from two directions: a fabric that is inherently hostile to bacteria, plus a durable anti-odour treatment validated to retain 94%+ effectiveness after 20 washes.

Full Guide Series: Lyocell in Depth

Shop Lyocell Activewear

All APRÍ lyocell garments are made from TENCEL™ Lyocell certified under OEKO-TEX Standard 100, GOTS, and Bluesign. Designed in Sweden. Made in Portugal.

Shop APRÍ lyocell activewear →