Our durable R4® Yulex® Hybrid Booties offer excellent warmth and protection for cold water surfing while still maintaining a traditional barefoot feel. Now made from lighter and stretchier 4mm 85% natural rubber/15% synthetic rubber by polymer content with a fast-drying 95% polyester (51% recycled)/5% spandex inverted microgrid thermal lining, their minimalist split-toe construction gives you superior dexterity and a close connection to the deck of your board, while soft but durable Supratex soles have rubber touch points to maximize grip. The exterior is 88% recycled polyester/12% spandex, and the exterior fabric and interior lining are now solution-dyed—using 86% less water than conventional dyeing. Both are laminated with water-based AquaA™ glue that’s free from harmful volatile organic compounds (VOCs). All seams are triple glued and internally taped. The low-bulk design also slides easily into swim fins for cold-water bodysurfing. Natural rubber content is derived from sources that are Forest Stewardship Council® certified by the Rainforest Alliance. Made in a Fair Trade Certified™ facility. Suggested water temperatures: 38–48° F/3–9° C.