natural yarns : optimal performance

THE ACTIVEWEAR TREE SOCK (Men's and Women's, 1 Pair)



Biosox tree socks are made with the highest quality beechwood rayon and have a high stitch density for a super-soft feel and all-day comfort. The natural properties of our wood-based rayon keep feet dry, cool and odor-free to help you achieve your best on the trails, track, gym or court.


  • Soft and comfortable: Fine-gauge beechtree yarn for a soft, seamless and luxurious feel
  • Sustainable materials: Made with Forest Stewardship Council-certified wood pulp and much better for the environment than cotton
  • Hard-wearing: Reinforced construction for unprecedented durability
  • Inhibits odor: Natural properties of wood fibre based yarn prevent the build up of bacteria
  • Great in all conditions: Breathable and thermo-regulating yarn for all-year comfort

Sustainably grown: Not only does our beech tree rayon feel so much better than cotton-based fabrics but it's much better for the environment.  We only use Forest Stewardship Council-certified wood pulp and our rayon is produced using a carbon-neutral and non-toxic process with water consumption ten to twenty times less than that of cotton.

Product Care: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean. 

Material: 64% Sustainable Beechwood Rayon, 24% Polyamide, 10% Polyester, 2% Lycra

Our guarantee: If you're not satisfied with your Biosox product, return it to us within 1 year of purchase and we'll be happy to refund or replace without question.

Collections: Biosox Beechtree Hyperfabric

Type: socks